The Vevor heated socks are designed to keep feet warm in cold conditions with four adjustable heat settings and app plus button control. Heating wires wrap around the toes, soles, and tops of the feet for even warmth. Dual rechargeable lithium batteries provide extended run time for outdoor activities such as hunting, hiking, camping, and riding. The socks are made with modal core yarn and faux mink fleece for a soft, comfortable feel. They are also washable and include a special laundry bag for easier care.