These rechargeable heated socks are designed to keep feet warm in cold conditions with four adjustable heat levels and app plus button control. Heating wires wrap around the toes, soles, and tops of the feet for even warmth. Dual lithium batteries provide extended runtime for hiking, camping, commuting, and other outdoor activities. The socks are made from modal core yarn and faux mink fleece for a soft, comfortable feel. They are washable and include a laundry bag for easy care.