WARM FEET: These rechargeable heated socks will keep your feet warmer with constant heat output. Carbon fiber, the heating element of the socks, is kept on the top part of the feet to keep you warm. QUALITY AND COMFORT: Made of 100% cotton and a built-in energy gauge, the heated socks are designed to be flexible and breathable. The socks can be comfortably worn with all types of shoes and boots. DESIGN AND HEATING TIMES: The heated socks remote control comes equipped with (2) 2400mAh 5V rechargeable batteries and (1) dual battery charger kit for convenience. Estimated heating times of the socks are High: 135F (2+hours), Medium: 120F (3+hours), and Low: 100F (5+hours). EASE OF USE: You can easily use and control the temperature of these battery heated socks. First, charge the 5V batteries available with the socks. Connect them to the USB cords present in the upper sock’s pocket. Click the button on the battery and you’re good to go. PERFECT GIFT: These heated socks with remote can be considered an ideal gift option for travel enthusiasts, especially for winter. The socks are perfect for use in camping, skiing, hunting, or even to wear at home. UPC 675595810961 Size Small-Medium Brand The Warming Store Color Black Use for Feet Material Cotton Brand Name The Warming Store Model Name TA-5V-SK-01-S-M Item Weight 1 Pounds Part Number TA-5V-SK-01-S-M Reusability Rechargeable Manufacturer Aheata Power Source Battery Powered Package Weight 0.51 Kilograms Suggested Users unisex-adult Battery Capacity 2400 Milliamp Hours Battery Description Lithium-Ion Included Components Battery Item Dimensions LxWxH 10 x 6 x 4 inches Upper Temperature Rating 135 Degrees Fahrenheit Recommended Uses For Product Outdoor Item Package Dimensions L x W x H 12.6 x 4.88 x 1.97 inches