NASA space-age insulation for your feet.
Toasty Feet™ Insoles use advanced aerogel insulation developed by NASA for space suits...a patented "nanoporous" material full of microscopic air pockets, with the highest thermal protection value of any solid available. In fact, Toasty Feet are so effective at blocking cold and heat, testers have stood barefoot on a block of dry ice (with a surface temperature of—106°!), while the top of the insoles stayed at +72°. And they're still as light and thin as any odor-eating inserts you've ever used. Imported. Sizes: Men's or women's one size fits all (trim to fit).

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