ELECTRIC SOCKS HEATED TIGHTS HEATED Protect and warm the foot, improve blood circulation, prevent foot cracking and cold weather injuries. Made of thickened cotton material, super comfortable to wear, breathable and well filled, soft and flexible. Ideal for various indoor and outdoor activities such as skiing, fishing, hiking, walking and camping, etc. Washable, safe and no electrical leaks. Foldable design, lightweight and compact size, ideal for home and travel use. Specification: Item Type: Heated Socks Material: cotton polyester Product Size: Sole length of the foot: approx. 21 cm / 8,3 inch Pipe length: approx. 27 cm / 10,6 inch List of packages: 2 x Heated Socks 2 x dry battery container 1 x Manual Note: 1. 2. Before using this product, first buy 6 dry AA batteries (dry alkaline batteries are recommended), and each battery pack contains 3 dry batteries. 3. After installing the battery, insert the DC head of the heating sock into the DC port of the battery container, turn the switch on the battery container to the ON position and turn on the machine. During this time, the red LED on the battery container is turned on, and the sock begins to heat up, and the heating temperature is about 50 , and the temperature is constant. If you feel that you are overheating or want to warm up, move the dual-stable switch on the battery container to the OFF position and turn off the power. During this time, socks can be kept warm for some time. The heating temperature will change as the ambient temperature changes.