"Silicone is extremely durable, and is the only breathable gel material available for insoles," said Seth Richards, CEO of Implus Footcare LLC. "Since air is able to pass through the material, your feet stay cooler and more comfortable."

"It's like walking on a cloud," said Petty. "With these in my shoes, my toes don't cramp anymore and my feet don't hurt."

Invisigel insoles for men come in sizes 7 to 12. Invisigel insoles for women are available in sizes 5 to 11 under the Airplus for Her brand. They are gender specific to offer the best fit possible, and unlike other insoles on the market, they are smooth. There is no stickiness on the surface.

"I have these soles in every pair of shoes and boots I own and they were a great investment. Now I can get through the day without hurting," said Petty.

You can find Airplus Invisigel brand insoles at Rite Aid and Kmart stores nationwide, at Fred Myer stores on the West Coast, Brooks Pharmacy on the East Coast, Wegman's Grocery in New York, Meijer Discount stores in the Midwest, and H.E. Butt grocery stores in Texas. For more information, log on to www.airplusfootcare.com.

- ARA Content