California Heat 7V Lithium-Ion Battery Socks Liner

The socks begin warming your feet within seconds using a compact, rechargeable 7V lithium-ion battery. The advanced heating technology allows you to maintain a constant level of thermal comfort and protection while enjoying your favorite outdoor activities. Constructed of thin, lightweight Lycra Spandex. Moisture wicking plus wind & water resistant. Features a wide elastic band with a Velcro strap for an adjustable, comfortable fit around your calves. Heating elements are located at the top of your foot then wrap around your toes and under your foot. Includes a y-harness to run up your legs and connect to 7V batteries. 2 batteries combined time 2-8 hours (depending on setting). Max Heat 135deg. F. Package Includes Everything Needed For Operation. Dual Wall Charger. (60in.) Y-Harness. (2) 7.4V / 3500mAh Rechargeable Lithium-Ion Batteries.