These sounded interesting so I just did a search and found this:
Dr. Rosenberg's Cool Soles, Cold & Hot Therapy For Feet
Availability: Usually ships the next business day.
DB-68676$25.97
Select SizeS/M (Wom 4-8 / Men 3-9)Lg/XL (Wom 9-13 / Men 10-14)
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Dr. Rosenberg's Cool Soles,
Cold and Hot Therapy For Your Feet
Relax and alleviate foot discomfort with Cool Soles. These temperature sensitive gel insoles provide cold or hot therapy for tired, sore feet. Use the cold to reduce swelling and pain after a long day of exercise and use the heat to warm your feet and increase circulation.
Merchant Note: The insoles are to be used while sitting down and not while walking. Consult your physician before use if you have diabetes, circulation problems or numbness in your feet. Do not walk on the product.
Use Cool Soles® Cold Therapy for these common problems:
Plantar fasciitis & sore muscles
Arch pain and Ball of the foot pain
Bunion discomfort or toe pain
Heel pain
Joint pain and stiffness
Tendonitis and shin splints
Hot feet
Use Cool Soles® Hot Therapy for these common problems:
Joint pain and stiffness
Sore Muscles
Cold Feet
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