Feature 1Windproof: Hand muff uses windproof cuffs and soft fleece lining to effectively stop the cold wind from entering the muff and keeping your hands warm. 2Waterproof: The waterproof treatment on the exterior can effectively prevent muff from getting wet, so you can keep your hands well protected from frostbite even in the outdoors. 3USB Connector: Heated hand muff havs a built in USB port that can be connected to a small power source such as a power bank to heat the hand muff. 4Three Level Temperature Control: Hand muff supports three level temperature adjustment, so that you can adjust the temperature according to your needs. 5Wide Application: This electric warmer muff is perfect for various outdoor activities in winter, such as camping, hunting, hiking, ice fishing, etc.Item Type: Heated Hand MuffMaterial: Waterproof quilted cottonWeight: Approx. 320g/11.29oz .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Heated Hand Muff