New calf socks are now available! 

Shorter in length than the old style ones, the length is just below the calf.

n  Material: 55% Coolmax，25% Elastic，20% Spandex

n  Heated socks for winter outdoor work or sports.

n  [The heating element covers the entire toe area] This battery sock is upgraded to use far-infrared heating elements, which can stimulate your blood circulation. It is very suitable for arthritic feet, chronic cold and stiff joints. Give you a warm winter.

n  [7.4V 2200mAH rechargeable lithium ion battery and 3-speed temperature controller] This electric sock includes a pair of 7.4V 2200mAH rechargeable lithium polymer battery. It can be heated up to 2.5-6 hours, and it will be fully charged for about 3-4 hours.

n  [Size selection] This heating sock has a variety of sizes to choose from. S, M, L, XL. The size table is as follows: S size is suitable for 1.54-1.82 m; M size is suitable for size: 1.84-2.64 m; L size is suitable for size: 2.74 to 3.74 m; XL size is suitable for size: 3.64-4.34 m. Please see the size chart in the picture.

n  [Improve blood circulation] This is the perfect solution for cold winter nights and days, arthritis feet and long-term cold feet and stiff joints. This rechargeable socks will ensure your feet are warm and comfortable.