Name: thick warm leggingsAutumn-winter seasonFever position: abdomen, back waist, knee and foot mouthFabric: velvet spandexVoltage: 5VPower interface: USBComposition: 85% cotton and 15% polyester fiberApplication: indoor, skiing, fishing, travel, camping, cycling, work and winter sports.Packing list: Leggings * 1Note: This product does not contain mobile power.How to use:1. Unplug the USB plug2. Insert a removable charger3. Turn on the removable charger4. Long press the smart switch for 3-5 seconds to start, warm up and after reaching the high temperature, it will automatically adjust to the medium temperature setting (blue).Washing instructions:1. Remove the removable charger and cover the waterproof cover of the charging cable.2. Can be gently cleaned with a washing machine3. You can use neutral detergent and then wash by hand.4. Don't rub or force the impact.5. Can be used after drying naturally.(Please remember the battery when you wash clothes)