These rechargeable heated socks are designed to keep feet warm during outdoor work and winter activities. They feature four heat settings from 40°C to 70°C and 360° heating coverage around the toes, soles, and tops of the feet. Dual lithium batteries provide extended warmth for long outings, while the push-button control allows easy adjustment. Made with modal core yarn and faux mink fleece, they are built for comfort and can be washed by hand or machine with the included laundry bag.