Exhibit 10.2

                                    ADDENDUM

     This Addendum is made and entered into as of January 18, 2006, by and among
H. H. Brown Shoe  Technologies,  Inc., a Delaware  corporation doing business as
Dicon  Technologies  with  its  principal  office  at 124  West  Putnam  Avenue,
Greenwich,  Connecticut  06830  ("Dicon"),  Hydrogel  Design  Systems,  Inc.,  a
corporation organized and existing under the laws of Delaware with its principal
office  at 2150  Cabot  Blvd.  West  Suite  B,  Langhorne,  PA  19047,  and Foam
Manufacturing,  Inc., a Delaware  corporation and the wholly owned subsidiary of
Hydrogel  Design  Systems,   Inc.  (Hydrogel  Design  Systems,   Inc.  and  Foam
Manufacturing, Inc. are hereinafter collectively referred to as "Hydrogel").

                                    RECITALS

     Dicon and Hydrogel are parties to that certain Agreement dated as of August
29, 2005 (the  "Agreement")  for the purchase and sale of certain  equipment and
the grant of manufacturing and distribution rights.

     Pursuant to the Agreement,  Hydrogel was required to pay $135,000.00 on the
execution of the Agreement by Dicon and Hydrogel.

     To date,  Hydrogel has paid Dicon $50,000.00 of the $135,000.00 that is due
and payable under the Agreement.

     Hydrogel  has  requested  Dicon to delay  the  payment  of the  balance  of
$85,000.00  that is due and  payable,  and Dicon is  willing to grant such delay
provided it receives  security for the payment of the additional  payments under
the Agreement, all as provided and subject to the terms and conditions contained
in this Addendum.

     NOW  THEREFORE,  in  consideration  of the terms,  covenants and provisions
contained herein, the parties do hereby agree as follows:

1. DEFINITIONS: Unless otherwise defined in this Addendum, all capitalized terms
shall have such meaning assigned to them in the Agreement.

2. DELAY OF PAYMENT:  Subject to Hydrogel's  grant to Dicon of a first  priority
purchase  money  security  interest  in and to the First  Line  Equipment  to be
shipped to Hydrogel by Dicon, Dicon agrees to delay the due date for the payment
of the  $85,000.00  that is due and payable by Hydrogel  until no later than the
end of business on February 1, 2006. Hydrogel expressly  acknowledges and agrees
that Dicon shall in no event be required to ship the First Line Equipment  until
such time as the $85,000.00 payment is received by Dicon.

3.  SECURITY  INTEREST:  In order to secure  payment  of the  second  payment of
$135,000.00  that  is due  and  payable  by  Hydrogel  on  the  Test  Date  (the
"Indebtedness") and all of Hydrogel's obligations under this Addendum,  Hydrogel
does hereby  grant to Dicon a present and  continuing  purchase  money  security
interest in and to the First Line Equipment (the "Collateral").  Upon payment in
full of the  Indebtedness,  Dicon  agrees to  promptly  file  appropriate  UCC-3
Termination  Statement(s)  to terminate  the purchase  money  security  interest
created hereby in the Collateral.


4. COVENANTS OF HYDROGEL:  Hydrogel agrees to defend the Collateral  against all
claims and demands of all persons. Hydrogel shall be responsible for all risk of
loss  and any  damage  to the  Collateral.  Hydrogel  shall  have  and  maintain
insurance  and pay all  premiums  at all times with  respect to the  Collateral,
payable to Dicon and Hydrogel as their interests may appear.

5. DEFAULT: Hydrogel shall be in default under this Addendum upon the occurrence
of any event that  constitutes a default or breach by Hydrogel of the payment of
the Indebtedness under the terms of the Agreement;  or the breach by Hydrogel of
any representation, covenant or other term of this Addendum.

6.  REMEDIES:  If  Hydrogel  shall be in  default  under this  Addendum,  Dicon,
immediately  and at any time  thereafter,  may declare  all of the  Indebtedness
secured pursuant to this Agreement immediately due and payable. Dicon shall have
all rights available in law or at equity,  including,  without  limitation,  the
right for specific  performance of this  Agreement or for an injunction  against
violations of any of the terms hereof, together with all the rights and remedies
of Dicon under the Delaware  Uniform  Commercial  Code and any other  applicable
law,  including the right to take  possession of the  Collateral or to render it
unusable by Hydrogel.  Dicon may require Hydrogel to assemble the Collateral and
make it  available  to  Dicon  at a place  to be  designated  by  Dicon  that is
reasonably  convenient to both parties.  Dicon may, insofar as Hydrogel can give
authority  therefore,  lawfully  enter upon any premises on which the Collateral
may be  located  and  peacefully  remain in  possession  thereon  or remove  the
Collateral  therefrom.  If the  Collateral  is  stored  by Dicon  on  Hydrogel's
premises,  Dicon  shall not be charged or held liable for the cost of the use of
such premises.  Dicon shall give Hydrogel commercially  reasonable notice of the
time and place of any public sale of the  Collateral  or of the time after which
any private sale or other intended  disposition of the Collateral is to be made.
The requirements of commercially  reasonable  notice shall be met if such notice
is mailed,  by means of regular or  expedited  mail  service,  postage  prepaid,
addressed  to Hydrogel at  Hydrogel's  address  shown at the  beginning  of this
Addendum,  or  the  most  recent  address  provided  to  Dicon  pursuant  to the
Agreement,  if any is applicable,  at least ten (10) days before the time of the
sale or other disposition. In the event Dicon disposes of any of the Collateral,
Hydrogel  shall remain liable for any deficiency and Dicon shall account for any
surplus.  All rights and  remedies  of Dicon  against the  Collateral,  shall be
cumulative and may be exercised  singularly or concurrently.  In the event Dicon
seeks to take  possession of any of the  Collateral by court  process,  Hydrogel
hereby  irrevocably  waives any bond and any surety or security relating thereto
required  by any  statute,  court  rule  or  otherwise  as an  incident  to such
possession and waives any demand for  possession  prior to  commencement  of any
suit or act to recover with respect thereto.

7.  COMMERCIAL  ACKNOWLEDGMENT.  HYDROGEL  ACKNOWLEDGES  THAT THE TRANSACTION TO
WHICH  THIS  ADDENDUM  AND THE  AGREEMENT  RELATE IS A  COMMERCIAL  TRANSACTION,
HYDROGEL WAIVES ITS RIGHT TO NOTICE OR HEARING UNDER ANY LAW WITH RESPECT TO ANY
PREJUDGMENT REMEDY THAT DICON MAY USE.

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8. WAIVER OF JURY TRIAL.  IN THE INTEREST OF A SPEEDY  RESOLUTION OF ANY LAWSUIT
WHICH MAY ARISE HEREUNDER,  BOTH DICON AND HYDROGEL WAIVE A TRIAL BY JURY IN ANY
ACTION WITH RESPECT TO THIS AGREEMENT AND AS TO ANY ISSUES  ARISING  RELATING TO
THIS AGREEMENT.

9. MISCELLANEOUS.

     a. Dicon may  exercise its rights with  respect to the  Collateral  without
resort to other collateral or sources of reimbursement for the Indebtedness.

     b. The provisions of this Addendum shall not be affected by any addition or
release  of any  person  or  entity  primarily  or  secondarily  liable  for the
Indebtedness  or  the  release  of  any  other  property  that  may  secure  the
Indebtedness.

     c. Hydrogel  shall pay to Dicon on demand any costs,  expenses,  attorneys'
fees  and  their  disbursements  incurred  or paid by  Dicon  in  protecting  or
enforcing  its  rights  in the  Collateral  and in  collecting  any  part of the
Indebtedness and such amounts expended  pursuant to hereto shall be added to the
Indebtedness.

     d. Any delay,  failure or waiver by Dicon to exercise any right it may have
under this Addendum is not a waiver of Dicon's right to exercise the same or any
other right at any other time.

     e. Hydrogel  Design  Systems,  Inc. and Foam  Manufacturing,  Inc. shall be
jointly and severally liable for any and all of their respective obligations and
liabilities  under this Addendum.  A breach by Hydrogel Design Systems,  Inc. or
Foam  Manufacturing,  Inc.  under  this  Addendum  or the  Agreement  shall also
constitute a breach by the other party and shall  entitle  Dicon to exercise all
of its rights and remedies  under this Addendum and at law or in equity  against
Hydrogel Design Systems, Inc. or Foam Manufacturing, Inc., or both.

     f. This Addendum and the security interest created hereby shall be governed
by the laws of the  State  of  Delaware.  Hydrogel  agrees  that any  proceeding
arising out of this Addendum or any document executed in connection herewith may
be  instituted  in any federal or state court in the State of  Connecticut,  and
Hydrogel irrevocably submits to the jurisdiction of any such court.

     g. No  agreement  to change or waive  the terms of this  Addendum  shall be
valid unless it is in writing and executed by Hydrogel and Dicon.

     h. In the event that there are any  provisions  contained in this  Addendum
which are  inconsistent  with the  provisions  contained in the main body of the
Agreement,  it shall be deemed to be the intent of the  parties  hereto that the
provisions  contained in this  Addendum  supersede any  inconsistent  provisions
therein.

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     i. All other terms and conditions of the Agreement  shall remain  unchanged
and in full force and effect.

     IN  WITNESS  WHEREOF,  Hydrogel  and  Dicon  have  executed  this  Addendum
effective as of the date first set forth above.


H. H. Brown Shoe Technologies, Inc.     Hydrogel Design Systems, Inc.
d/b/a Dicon Technologies
                                                /s/ Matthew L. Harriton
                                        By:_____________________________________
                                            Matthew L. Harriton, President

    /s/ Wayne Celia
By:_______________________________________
   Wayne Celia, President, duly authorized

                                        Foam Manufacturing, Inc.

                                            /s/ Matthew L. Harriton
                                        By:_____________________________________
                                            Matthew L. Harriton, President



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