Never worry about cold feet again. These new and improved removeable insoles feature a carbon liner and an antimicrobial exterior that absorbs moisture and odors. An innovative heating element warms the entire foot from the ball of the foot to the toes. Trim-to-fit design with Lycra and cushioning EVA materials. Easily control the 3 settings of heat output with the keychain remote, allowing you to keep your feet warm and protected from the elements without any hassle. Simply charge and place in any footwear for the best defense against the chills.

• Heats for 4 hours on High, 6 hours on Medium and 8 hours on Low
• Ultra-slim heating element technology with Lycra and EVA cushioning
• Keychain remote controls On/Off and heat level settings
• Built-in 3.7V Lithium-ion rechargeable batteries (1000+ charges)
• AC Charger and dual-battery cord