Bid farewell to cold feet with the Gerbing Rechargeable Heated Insoles with Remote. Featuring a built-in heating system that uses 3V rechargeable batteries (included), these Gerbing insoles provide up to 8 hours of warmth on a single charge. A convenient remote control lets you cycle through 3 heat settings, warming to 100F on low, 120F on medium, and 140F on high. Boasting a super-thin and lightweight design, you won't even know they're there well, except that your feet will be toasty warm! At the end of the day, simply plug them in with the included dual miscro-USB charging cord. The Gerbing Rechargeable Heated Insoles with Remote have breathable fleece linings. Comes with a storage bag and instruction manual. Imported. Integrated heating system provides up to 8 hours of warmth 3 settings 100F on low, 120F on medium, and 140F on high Included rechargeable 3V batteries are built into the heels Remote control lets you easily control heat output Thin, lightweight design Includes a charging cord and storage bag