The ActionHeat 5V Battery Heated Fleece Gaiter with fleece lining is a cozy & soft option for keeping your neck & head warm during cold weather activities. Thanks to the knit design and cozy fleece lining, the neck gaiter traps your body's natural heat, and you will love the extra comfort of strategically placed heating panels on both sides. Fit & Design: Built-in heating panels strategically placed over both ears 4 LED power indicators display the power bank's battery life Battery Voltage: 5-Volt One size fits most An advanced heat-trapping insulation layer Ultra-fine carbon fiber heating panels Technology: Touch-button control technology (3 settings) Additional Details: Breathable acrylic blend with fleece lining Outer shell: 43.3% Acrylic, 30.5% wool, 26.2% Nylon Lining: 100% Polyester