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The ThermaCELL Remote-Controlled Heated Insoles are the extended solution to cold feet. These wireless, battery-powered flexible polyurethane insoles easily slip into your boots or shoes and the included fingertip remote control lets you choose the appropriate heat setting: medium (100°F) or high (111°F). Designed to keep your feet warm, not hot, to avoid having your feet sweat and freeze. They are breathable, shock absorbent, and conduct heat well for optimum comfort, and are highly water-resistant, to protect the electronics from moisture.
Each insole has an embedded rechargeable lithium-ion polymer battery, and charge in about 4 hours with a maximum runtime of 5 hours. The insoles are charged by removing them from the boot or shoe and plugging them into the included charger, and are offered here in size x-large to fit men's sizes 9.5-11 or women's 10.5-12, and can be trimmed to fit virtually any shoe.