75% polyester, 15% Elastane，10% nylon
【Soft and Breathable】Heating socks with super comfortable, thick and well padded.Absorbent, breathable, quick-drying, elastic-thicken, use ultra-thin electric heating module.Soft Padded reinforced heel & toe accurate stitching and recessed heating element help focus heat on the toe to keep your feet warm from cold weather.
【Warm Cozy and Healthy】Heated socks upgraded to use fiber heating elements all around both fore foot and instep，the infrared can stimulate your foot blood circulation.
【Quality Imported Material】This winter socks have long life work time with 7.4V 2200MAH Li-ion rechargeable battery.Imported heating elements and quality material.It can keep you warm all day (especially for chronically cold feet), Dual cable charging system for the batteries to charge at the same time, the ease of removing batteries. Long-lasting heating, long life batteries, no longer afraid of the cold.