FEATURES
-Operated by a wireless remote control
-No wires, Velcro straps, or batteries mounted to the ankle, shoe, or waist
-Charge lasts up to 5 hours of constant use (on medium heat setting)
-Powered by rechargeable, built-in lithium-ion polymer batteries embedded in the insoles
-Adjustable to 3 temperature settings: No Heat, Medium (100ºF), & High (111ºF)
-Can be recharged at least 500 times
-Recharges in 4 hours or less
-Mens ShoeSize: 9.5 to 11
-Womens Shoe Size: 10.5 to 12