This footwarmer offers convenient remote regulate operation, no wires or external batteries. And as much as 2500 hours of toasty heat to warm cold feet.
Rechargeable foot warmer is operated by a wireless remote regulate whilst the foot warmer is within your shoes or boots.4.5 5.5 Inch (Mens)/6 7 Inch(Womens)
Uses high tech wireless thermal technology no wires, extension cords, Velcro Straps or battery strap brackets & no batteries mounted for your ankle, shoe or waist.
Lithium ion polymer batteries embedded within the foot warmer insoles are rechargeable
Adjustable to a few temperature settings to warm cold feet by remote regulate: settings are no heat, medium 100 degees & high 111 degrees
can also be recharged as much as 500 times the use of the charger that may be included