Note: Please allow 1?3cm error due to manual measurement. Thanks for your understanding. specification: Item Type: Electric Heated Socks_x000D_Material: Cotton_x000D_Battery: 2 x Lithium Batteries (Included)_x000D_Single Battery Capacity: 2200mAh_x000D_Sole Size: Approx. 20cm / 7.87in_x000D__x000D_Hose Size: Approx. 34cm / 13.39in Features: 1Made of high quality cotton fiber, soft, breathable, which is comfortable to wear. 2With three gears to be adjusted, you can adjust different temperatures according to your need. 3The mobile power supply can be put completely in the socks, which is easy to use. 4The unisex rechargeable battery thermal socks is a best choice for you to wear in cold weather. 5Great for indoor and outdoor activities such as skiing, fishing, walking and hunting. PackageList: 2 x Socks 2 x Batteries 1 x Instruction 1 x USB Cable