... soles/heated insole/foot warmer 1400mAh lithium battery Wireless heated insoles with remote control Thermo soles/heated insole/foot warmer ... foot warmer is inside your shoes or bootsUses high-tech wireless thermal technology—no wires, extension cords, Velcro® straps, ... your shoes or bootsLess than half the cost of other wireless remote systemsTested by SATRA, worldwide leader in footwear testing, ...