BATTERY HEATED WOOL SOCKS
Material: 50% wool + 45% cotton + 5% spandex
- Extra soft active-cuff
- Heating Area: on top of foot toward the toes
- Three power level settings on battery allowing you to select your desired heat output, work time ups to 4 Hours in Red Light ( Full Charged ). Not like any other AA batteries.
- Use 2x3.7V2200mAh rechargeable lithium batteries, with one dual charger