Instant Heat: Electric thermal insulated socks are powered by a pair of 3.7V rechargeable Li-ion batteries (INCLUDE), heating temperature up to 125F, heating element is on the top of the foot near the toes. Three adjustable heat settings for different temperature demands.
Soft Material: These heated socks are made of cotton polyester spandex material, thick, comfortable and breathable. Keep feet warm and toasty in cold weather, no more socks!
Safety & Improve Circulation: Help those who have raynauds syndrome or chronic circulation issues, improve blood circulation and reduce soreness.
Usage Application: Perfect for a variety of indoor outdoor events like hunting, hiking, riding, fishing, cycling, driving, running, camping,skiing, climbing, walking, sleeping etc.
Free Size: One size fits USA 6-10, super elastic and stretchable for adults, men and women (6-12 USA size). Package include: a pair of heated socks, two 3.7V rechargeable batteries, a AC charger and instruction.