FEATURES
-Wireless
-Remote controlled - fingertip control of heat without removing your footwear
-3 heat settings: No Heat, Medium (100ºF), & High (111ºF)
-Rechargeable, removable batteries (2 included)
-Battery charges in 4 hours using wall charger or any USB port
-Charge lasts up to 5 hours
-Batteries are easy to change without removing insole from boot or shoe
-Mens ShoeSize: 11.5 to 13
-Womens Shoe Size: 12.5 to 14