heating insoles

Functions
1, This is a pair of newest design heating insole , the purpose is for avoiding the feet to be frozen or frostbite in frigid high mountain and winter.
2, It can promote the blood circulation and prevention the rheumatism and arthritis.
3, it is most suitable for outdoor activities under frosty climate..
4, Thermal efficiency is highest.
5, Waterproof ( Can washing), can resist acid and alkali, soft, flexible, durable and comfortable.
6, Carry convenience, and apply to various different shoes shapes.
7, Cubage is light and handy, can liberty cut out different feet shapes.
8, It have gaiter designer and have no burden.
9, Battery quantity is least. (Unilateral A3* 2 or 3, It can change battery box). It can applied the standard battery to rechargeable battery
10, Save electricity design, battery box add to switch (ON/OFF).
Electric power can reach 4 hours continuously (If Switch on/off but reach 3 days)