Exhibit 10.4

             


                                                 Dated: __________________, 1996




                          Guaranty and Surety Agreement


To induce Midlantic Bank, N.A. (the "Lender") to make loans, extensions of
credit or other financial accommodations to, and grant temporary forbearance
with respect to existing loans to, RYKA INC. (the "Borrower"), now or in the
future, to secure the observance, payment, and performance of the Liabilities
(as defined below) and with full knowledge that the Lender would not make the
said loans, extensions of credit, or financial accommodations without this
Guaranty and Surety Agreement (together with any amendments or modifications
hereto in effect from time to time, the "Guaranty"), which shall be a contract
of suretyship, the Guarantor (as defined below), intending to be legally bound
hereby, unconditionally agrees as follows:

A.       Liabilities Secured.  The Guarantor, hereby guarantees the
         full, prompt, and unconditional payment of the Liabilities (as
         defined below), when and as the same shall become due, whether
         at the stated maturity date, by acceleration, or otherwise,
         and the full, prompt, and unconditional performance of each
         and every term and condition of every transaction to be kept
         and performed by the Borrower and any other Obligor under the
         Loan Documents (as defined below).  This Guaranty is a primary
         obligation of the Guarantor and shall be a continuing
         inexhaustible Guaranty without limitation as to amount or
         duration and may not be revoked.

B.       Definitions.  As used herein, the following terms shall have
         the following meanings:
 
         1.       Affiliate.  The term "Affiliate" means Midlantic Bank,
                  N.A., and any of its direct and indirect affiliates and
                  subsidiaries.

         2.       Collateral.  The term "Collateral" means all property of
                  the Guarantor and/or any Obligor, now or hereafter in the
                  possession of the Lender or any Affiliate, in any
                  capacity whatsoever including, but not limited to, any
                  balance or share of any deposit, trust or agency account,
                  and all property and assets of the Guarantor and/or any
                  Obligor now or hereafter subject to a security agreement,
                  pledge, mortgage, assignment, or other document or




                  agreement granting the Lender a security interest therein
                  or lien or encumbrance thereon.
 
         3.       Guarantor.  The term "Guarantor" means each of the
                  persons and entities who are signatories to this Guaranty
                  other than the Lender.
 
         4.       Liability.  The term "Liability" or "Liabilities" means
                  any and all obligations and indebtedness of every kind
                  and description of the Borrower or of any Obligor owing
                  to the Lender under the Loan Documents, including,
                  without limitation, any increase in and renewals or
                  extensions of the credit facility established thereby,
                  and whether such debts or obligations are primary or
                  secondary, direct or indirect, absolute or contingent,
                  sole, joint or several, secured or unsecured, due or to
                  become due, contractual or tortious, arising by operation
                  of law, by overdraft, or otherwise, or now or hereafter
                  existing, including, without limitation, principal,
                  interest, fees, late fees, expenses, and reasonable
                  attorneys' fees and costs, that have been or may
                  hereafter be contracted or incurred.
 
         5.       Loan Documents.  The term "Loan Documents" means this
                  Guaranty and that certain Loan and Security Agreement,
                  dated July 31, 1995, between Lender and Borrower,
                  together with any and all amendments, modifications,
                  renewals, increases, restatements or extensions thereof
                  (as heretofore and hereafter amended, the "Loan
                  Agreement") and Revolving Credit Note in the principal
                  amount of $4,000,000 bearing even date therewith issued
                  by Borrower to Lender.
 
         6.       Obligor.  The term "Obligor" means the Borrower and each
                  and every maker, endorser, guarantor, or surety,
                  including, without limitation, the Guarantor, of or for
                  the Liabilities.
 
C.       Representations and Warranties.  The Guarantor represents and
         warrants as of the date hereof and at all times hereafter
         until the Liabilities are fully paid and performed, and any
         commitment to make loans, extensions of credit, or other
         financial accommodations to the Borrower have been terminated,
         that this Guaranty and any other Loan Document to which the
         Guarantor is a party agree authorized by all necessary
         corporation action on Guarantor's part, are within the
         corporate power and authority of Guarantor, does not violate
         or result in a default under Guarantor's Articles of
         Incorporation, By-laws or any contract or agreement to which
         Guarantor is a party, are the legal, valid, and binding



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         obligations of the Guarantor, enforceable against it in
         accordance with their terms, except as the same may be limited
         by bankruptcy, insolvency, reorganization, or other laws or
         equitable principles relating to or affecting the enforcement
         of creditors' rights generally.  The loans or credit
         accommodations made by the Lender to the Borrower and the
         assumption by the Guarantor of its obligations hereunder and
         under any other Loan Document to which the Guarantor is a
         party will result in material benefits to the Guarantor.  This
         Guaranty was entered into by the Guarantor for commercial
         purposes.
 
D.       No Limitation of Liability.  Without incurring responsibility
         to the Guarantor and without impairing or releasing the
         obligations of the Guarantor to the Lender or to any
         Affiliate, the Lender may, at any time, and from time to time,
         without the consent of, or notice to the Guarantor, upon any
         terms or conditions, and in whole or in part:
 
         1.       Payment Terms.  Change the manner, place, or terms of
                  payment, and/or change or extend the time for payment, or
                  renew or alter, any of the Liabilities, any security
                  therefor or any of the Loan Documents evidencing same,
                  and the Guaranty herein made shall apply to the
                  Liabilities and the Loan Documents as so changed,
                  extended, renewed, or altered;
 
         2.       Sale of Property.  Sell, exchange, release, surrender,
                  realize upon, or otherwise deal with in any manner and in
                  any order, any property including the Collateral, by
                  whomsoever at any time pledged, mortgaged, or in which a
                  security interest is given to secure, or howsoever
                  securing, the Liabilities;
 
         3.       Failure to Exercise Rights.  Exercise or refrain from
                  exercising any rights against the Borrower or any other
                  Obligor (including the Guarantor) or against any
                  Collateral for the Liabilities or otherwise act or
                  refrain from acting;
 
         4.       Settlement of Liabilities.  Settle or compromise any
                  Liabilities, whether in a proceeding or not, and whether
                  voluntarily or involuntarily, dispose of any Collateral
                  therefor, with or without consideration, or settle or
                  compromise any liability incurred directly or indirectly
                  in respect thereof or hereof, and/or subordinate the
                  payment of all or any part thereof to the payment of any
                  Liabilities, whether due or not;
 



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         5.       Application of Funds.  Apply any sums by whomsoever paid
                  or howsoever realized to any Liabilities in any order
                  deemed appropriate by the Lender;
 
         6.       Release of Obligations.  Add, release, settle, modify, or
                  discharge the obligation of any Obligor or any other
                  party who is in any way obligated for any of the
                  Liabilities;

         7.       Additional Security.  Accept any additional security for
                  the Liabilities; and/or
 
         8.       Any Other Action.  Take any other action which might
                  constitute a defense available to, or a discharge of, the
                  Borrower or any other Obligor (including the Guarantor),
                  in respect of the Liabilities.
 
         The invalidity, irregularity, or unenforceability of all or
         any part of the Liabilities or any Loan Document or any
         agreement or instrument relating thereto, or the lack of
         validity, enforceability, perfection, impairment or loss of
         any liens or security interests granted in connection
         therewith, whether caused by any action or inaction of the
         Lender or any Affiliate, or otherwise, shall not affect,
         impair, or be a defense to the Guarantor's obligations under
         this Guaranty.

E.       Waiver of Subrogation.

         (a)      The Guarantor irrevocably waives any present or future
                  claim, right or remedy to which the Guarantor is or
                  becomes entitled that arises hereunder and/or from the
                  performance by the Guarantor hereunder to be subrogated
                  to the Lender's rights against the Borrower or any other
                  Obligor and/or any present or future claim, right or
                  remedy to seek contribution, reimbursement, exoneration,
                  indemnification, payment or the like from the Borrower or
                  any other Obligor on account of this Guaranty or any
                  other Loan Document and/or to participate in any security
                  which the Lender now has or hereafter acquires, whether
                  or not such claim, right or remedy arises in equity,
                  under contract, by statute, under common law or
                  otherwise.

         (b)      If, notwithstanding the aforesaid waiver, any funds or
                  property shall be paid or transferred to the Guarantor on
                  account of such subrogation, reimbursement, exoneration,
                  indemnification, or contribution at any time when all of
                  the Liabilities have not been paid in full, the Guarantor
                  shall hold such funds and/or property in trust for the



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                  Lender and shall forthwith pay over or deliver to the
                  Lender such funds and/or property to be applied by the
                  Lender to the Liabilities.
 
F.       Events of Default.  The occurrence of any Event of Default
         under the Loan Agreement shall constitute an event of default
         ("Event of Default") under this Guaranty.

G.       Remedies.

         1.       Acceleration of Liabilities; Rights of Lender.  Upon the
                  occurrence of an Event of Default described in the Loan
                  Agreement, at the Lender's sole option, all Liabilities
                  shall immediately become due and payable in full, all
                  without protest, presentment, demand or further notice of
                  any kind to the Guarantor or any other Obligor, all of
                  which are expressly waived.  Upon and following an Event
                  of Default, the Lender may, at its option, exercise any
                  and all rights and remedies it has under this Guaranty,
                  any other Loan Document and/or applicable law including,
                  without limitation, an action for specific performance to
                  enforce or aid in the enforcement of any provision
                  contained herein or in any other Loan Document.
 
         2.       Right of Set-off.  If any of the Liabilities shall be due
                  and payable and whether or not the Lender shall have made
                  any demand under this Guaranty, and regardless of the
                  adequacy of any Collateral for the Liabilities or other
                  means of obtaining repayment of the Liabilities, the
                  Lender shall have the right, without notice to the
                  Guarantor or to any other Obligor, and is specifically
                  authorized hereby to apply toward and set-off against and
                  apply to the then unpaid balance of the Liabilities any
                  items or funds of the Guarantor and/or any Obligor held
                  by the Lender or any Affiliate, any and all deposits
                  (whether general or special, time or demand, matured or
                  unmatured) or any other property of the Guarantor and/or
                  any Obligor, including, without limitation, securities
                  and/or certificates of deposit, now or hereafter
                  maintained by the Guarantor and/or any Obligor for its or
                  their own account with the Lender, and any other
                  indebtedness at any time held or owing by the Lender or
                  any Affiliate to or for the credit or the account of the
                  Guarantor and/or any Obligor, even if effecting such
                  set-off results in a loss or reduction of interest or the
                  imposition of a penalty applicable to the early
                  withdrawal of time deposits.  For such purpose, the
                  Lender shall have, and the Guarantor hereby grants to the
                  Lender, a first lien on and security interest in such
                  deposits, property, funds and accounts and the proceeds



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                  thereof.  The Guarantor further authorizes any Affiliate,
                  upon and following the occurrence of an Event of Default,
                  at the request of the Lender, and without notice to the
                  Guarantor, to turn over to the Lender any property of the
                  Guarantor held by the Affiliate for the Guarantor's
                  account and to debit any deposit account maintained by
                  the Guarantor with such Affiliate (even if such deposit
                  account is not then due or there results a loss or
                  reduction of interest or the imposition of a penalty in
                  accordance with law applicable to the early withdrawal of
                  time deposits), in the amount requested by the Lender up
                  to the amount of the Liabilities, and to pay or transfer
                  such amount or property to the Lender for application to
                  the Liabilities.
 
         3.       Remedies Cumulative; No Waiver.  The rights, powers and
                  remedies of the Lender provided in this Guaranty and the
                  other Loan Documents are cumulative and concurrent, and
                  are not exclusive of any right, power or remedy available
                  to the Lender.  No failure or delay on the part of the
                  Lender in the exercise of any right, power or remedy
                  shall operate as a waiver thereof, nor shall any single
                  or partial exercise preclude any other or further
                  exercise thereof, or the exercise of any other right,
                  power or remedy.
 
         4.       Continuing Enforcement of the Loan Documents.  If, after
                  receipt of any payment of all or any part of the
                  Liabilities or the obligations of the Guarantor to the
                  Lender, the Lender is compelled or agrees, for settlement
                  purposes, to surrender such payment to any person or
                  entity for any reason, then this Guaranty and the other
                  Loan Documents shall continue in full force and effect or
                  be reinstated, as the case may be.  The provisions of
                  this paragraph shall survive the termination of this
                  Guaranty and the other Loan Documents and shall be and
                  remain effective notwithstanding the payment of the
                  Liabilities, the cancellation of the Guaranty or any
                  other Loan Document, the release of any security
                  interest, lien or encumbrance securing the Liabilities,
                  or any other action which the Lender may have taken in
                  reliance upon its receipt of such payment.

H.       Miscellaneous.

         1.       Notices.  Any notices and communications which may be
                  given under this Guaranty shall be in writing and shall
                  be given by (i) hand-delivery, (ii) first class mail
                  (postage prepaid), (iii) reliable overnight commercial
                  courier (charges prepaid), or (iv) telecopy, in each case



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                  to the addresses or telecopy numbers set forth in this
                  Guaranty.  Notice by overnight courier shall be deemed to
                  have been given and received on the date scheduled for
                  delivery.  Notice by mail shall be deemed to have been
                  given and received three (3) calendar days after the date
                  first deposited in the United States Mail.  Notice by
                  hand-delivery shall be deemed to have been given and
                  received upon delivery.  Notice by telecopy will be
                  deemed to have been given upon transmission.  A party may
                  change its address by giving written notice to the other
                  party as specified herein.

         2.       Costs and Expenses.  Whether or not the transactions
                  contemplated by the Loan Documents are fully consummated,
                  the Guarantor shall promptly pay (or reimburse, as the
                  Lender may elect) all costs and expenses which the Lender
                  has incurred or may hereafter incur in connection with
                  the enforcement of this Guaranty and the other Loan
                  Documents, the collection of all amounts due under this
                  Guaranty and the other Loan Documents, and all
                  amendments, modifications, consents or waivers, if any,
                  to this Guaranty and the other Loan Documents.  The
                  Guarantor's reimbursement obligations under this
                  paragraph shall survive any termination of the Loan
                  Documents.
 
         3.       Governing Law.  This Guaranty shall be construed in
                  accordance with and governed by the substantive laws of
                  the Commonwealth of Pennsylvania without reference to
                  conflict of laws principles.
 
         4.       Integration; Amendment; No Third Party Beneficiary.  This
                  Guaranty and the other Loan Documents constitute the sole
                  agreement of the parties with respect to the subject
                  matter hereof and thereof and supersede all oral
                  negotiations and prior writings with respect to the
                  subject matter hereof and thereof.  No amendment of this
                  Guaranty, and no waiver of any one or more of the
                  provisions hereof shall be effective unless set forth in
                  writing and signed by the parties hereto.  The Guarantor
                  and the Lender do not intend any benefits of this
                  Guaranty to inure to any third party and no third party
                  (including the Borrower) shall have any status, right or
                  entitlement under this Guaranty.

         5.       Successors and Assigns.  This Guaranty (i) shall be
                  binding upon the Guarantor and the Lender and their
                  respective successors and permitted assigns, and (ii)
                  shall inure to the benefit of the Guarantor and the
                  Lender and their respective successors and permitted



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                  assigns; provided, however, that the Guarantor may not
                  assign its rights or obligations hereunder or any
                  interest herein without the prior written consent of the
                  Lender, and any such assignment or attempted assignment
                  by the Guarantor shall be void and of no effect with
                  respect to the Lender.  The Lender may from time to time
                  sell or assign, in whole or in part, or grant
                  participations in some or all of the Loan Documents
                  and/or the obligations evidenced thereby. The Guarantor
                  authorizes the Lender to provide information concerning
                  the Guarantor to any prospective purchaser, assignee or
                  participant.
 
         6.       Severability and Consistency.  The illegality,
                  unenforceability or inconsistency of any provision of
                  this Guaranty or any instrument or agreement required
                  hereunder shall not in any way affect or impair the
                  legality, enforceability or consistency of the remaining
                  provisions of this Guaranty or any instrument or
                  agreement required hereunder.  The Loan Documents are
                  intended to be consistent.  However, in the event of any
                  inconsistencies among any of the Loan Documents, such
                  inconsistency shall not affect the validity or
                  enforceability of any Loan Document.  The Guarantor
                  agrees that in the event of any inconsistency or
                  ambiguity in any of the Loan Documents, the Loan
                  Documents shall not be construed against any one party
                  but shall be interpreted consistent with the Lender's
                  policies and procedures.
 
         7.       Consent to Jurisdiction and Service of Process.  The
                  Guarantor hereby consents that (i) any action or
                  proceeding against it may be commenced and maintained in
                  any court within the Commonwealth of Pennsylvania or in
                  the United States District Court for the Eastern District
                  of Pennsylvania by service of process on such officer;
                  and (ii) such courts shall have jurisdiction with respect
                  to the subject matter hereof and the person of the
                  Guarantor and all Collateral for the Liabilities.  The
                  Guarantor agrees that any action brought by the Guarantor
                  shall be commenced and maintained only in a court in the
                  federal judicial district or county in which the Lender
                  has its principal place of business in Pennsylvania.
 
         8.       Joint and Several Liability.  In the event that the
                  Guarantor consists of more than one person or entity, the
                  Liabilities or obligations of each such person or entity
                  shall be joint and several and the word "Guarantor" means
                  each of them, any of them and/or all of them.




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         9.       Judicial Proceedings; Waivers.
 
                  THE GUARANTOR AND THE LENDER ACKNOWLEDGE AND AGREE THAT
                  (I) ANY SUIT, ACTION OR PROCEEDING, WHETHER CLAIM OR
                  COUNTERCLAIM, BROUGHT OR INSTITUTED BY THE LENDER OR THE
                  GUARANTOR OR ANY SUCCESSOR OR ASSIGN OF THE LENDER OR THE
                  GUARANTOR, ON OR WITH RESPECT TO THIS GUARANTY OR ANY OF
                  THE OTHER LOAN DOCUMENTS OR THE DEALINGS OF THE PARTIES
                  WITH RESPECT HERETO, OR THERETO, SHALL BE TRIED ONLY BY
                  A COURT AND NOT BY A JURY AND EACH PARTY WAIVES THE RIGHT
                  TO TRIAL BY JURY; (II) EACH WAIVES ANY RIGHT IT MAY HAVE
                  TO CLAIM OR RECOVER, IN ANY SUCH SUIT, ACTION OR
                  PROCEEDING, ANY SPECIAL, EXEMPLARY, PUNITIVE OR
                  CONSEQUENTIAL DAMAGES OR ANY DAMAGES OTHER THAN, OR IN
                  ADDITION TO, ACTUAL DAMAGES;  AND (III) THIS SECTION IS
                  A SPECIFIC AND MATERIAL ASPECT OF THIS GUARANTY AND THE
                  LENDER WOULD NOT EXTEND CREDIT TO THE BORROWER IF THE
                  WAIVERS SET FORTH IN THIS SECTION WERE NOT A PART OF THIS
                  GUARANTY. THE GUARANTOR HEREBY WAIVES PRESENTMENT, NOTICE
                  OF DISHONOR AND PROTEST OF ALL INSTRUMENTS INCLUDED IN OR
                  EVIDENCING THE LIABILITIES OR THE COLLATERAL, IF ANY, AND
                  ALL OTHER NOTICES AND DEMANDS WHATSOEVER, WHETHER OR NOT
                  RELATING TO SUCH INSTRUMENTS.

         10.      WARRANT OF ATTORNEY.  THE GUARANTOR HEREBY AUTHORIZES
                  AND EMPOWERS ANY ATTORNEY OR ATTORNEYS OR THE
                  PROTHONOTARY OR CLERK OF ANY COURT OF RECORD IN THE
                  COMMONWEALTH OF PENNSYLVANIA, UPON THE FAILURE BY THE
                  GUARANTOR TO PAY WHEN DUE ANY SUM PAYABLE BY THE
                  GUARANTOR PURSUANT TO THIS AGREEMENT, TO APPEAR FOR THE
                  GUARANTOR IN ANY SUCH COURT, WITH OR WITHOUT DECLARATION
                  FILED, AS OF ANY TERM OR TIME THERE OR ELSEWHERE TO BE
                  HELD AND THEREIN TO CONFESS OR ENTER JUDGMENT AGAINST THE
                  GUARANTOR IN FAVOR OF THE LENDER FOR ALL SUMS DUE OR TO
                  BECOME DUE BY THE GUARANTOR TO THE LENDER UNDER THIS
                  AGREEMENT, WITH COSTS OF SUIT AND RELEASE OF ERRORS AND
                  WITH THE GREATER OF FIVE PERCENT (5%) OF SUCH SUMS OR
                  $7,500.00 ADDED AS A REASONABLE ATTORNEYS' FEE; AND FOR
                  DOING SO THIS AGREEMENT OR A COPY VERIFIED BY AFFIDAVIT
                  SHALL BE SUFFICIENT WARRANT; SUCH AUTHORITY AND POWER
                  SHALL NOT BE EXHAUSTED BY ANY EXERCISE THEREOF, AND
                  JUDGMENT MAY BE CONFESSED AS AFORESAID FROM TIME TO TIME
                  AS OFTEN AS THERE IS OCCASION THEREFOR.

                           THE GUARANTOR ACKNOWLEDGES THAT HE HAS HAD THE
                  ASSISTANCE OF COUNSEL IN THE REVIEW AND EXECUTION OF THIS
                  AGREEMENT AND FURTHER ACKNOWLEDGES THAT THE MEANING AND
                  EFFECT OF THE CONFESSION OF JUDGMENT HAVE BEEN FULLY
                  EXPLAINED TO HIM BY SUCH COUNSEL.




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                           THE GUARANTOR, BEING FULLY AWARE OF THE RIGHT TO
                  NOTICE AND A HEARING CONCERNING THE VALIDITY OF ANY AND
                  ALL CLAIMS THAT MAY BE ASSERTED AGAINST THE GUARANTOR BY
                  THE LENDER BEFORE A JUDGMENT CAN BE ENTERED HEREUNDER OR
                  BEFORE EXECUTION MAY BE LEVIED ON SUCH JUDGMENT AGAINST
                  ANY AND ALL PROPERTY OF THE GUARANTOR, HEREBY WAIVES
                  THESE RIGHTS AND AGREES AND CONSENTS TO JUDGMENT BEING
                  ENTERED BY CONFESSION IN ACCORDANCE WITH THE TERMS HEREOF
                  AND EXECUTION BEING LEVIED ON SUCH JUDGMENT AGAINST ANY
                  AND ALL PROPERTY OF THE GUARANTOR, IN EACH CASE WITHOUT
                  FIRST GIVING NOTICE AND THE OPPORTUNITY TO BE HEARD ON
                  THE VALIDITY OF THE CLAIM OR CLAIMS UPON WHICH SUCH
                  JUDGMENT IS ENTERED.


                                 /s/ MICHAEL G. RUBIN
                                 -----------------------------------
                                 MICHAEL G. RUBIN

 
                                 ADDRESS:
                                         ---------------------------

                                         ---------------------------

                                 TELECOPY #
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