Nexgen Heat MP7905 Men’s Heated Sock Liners Top + bottom heating elements, 3 heat levels, and rechargeable power included—built for cold rides, work, and winter days. Heat Top + Bottom 3 Heat Settings 7.4V Rechargeable Power Twin Batteries Included Full Foot Heat Heating elements on both the top and bottom of the foot for more complete coverage. Dial Your Temp 3 heat settings: Low 95F, Medium 105F, High 120F. Secure Calf Fit Adjustable calf strap helps keep the liner positioned comfortably on most legs. Power Included 7.4V rechargeable battery system with twin batteries + wall charging kit. Built Details Soft Durable Poly Exterior Comfort-first feel designed to sit inside boots without bulk. Top + Bottom Heating Heating elements placed on both sides of the foot for broader warmth zones. 3 Heat Levels Low 95F, Medium 105F, High 120F to match conditions and comfort. 7.4V Rechargeable System Powered by a 7.4V rechargeable battery system (included). Twin Batteries + Charger Includes two batteries and a wall charging kit for easy rotation. Wear With Thin Socks Designed to be worn with thin socks only for better fit and comfort. What’s Included 1 pair Nexgen Heat MP7905 heated sock liners 2 rechargeable batteries (twin set) Wall charging kit Care Remove batteries before cleaning or storing. Follow garment label instructions for results. Air dry; avoid high heat.