Item Type: Handlebar Warmer Material: neoprene + ABS + Metal + Retractable Diving Cloth Voltage: 5V Power: 15W Supply Mode: USB Heating element Application: suitable for motorcycles, bicycles, and ATVs with 22?32mm/0.9?1.3in diameter handlebars. 3 Gear Adjustment: Blue Light1Connect to a car 2A USB charger (not included) or power supply (not included), and will heat up in about 15 seconds. 2DIY creative, easy to install, just wrap the heater on the handlebars, making your hands feel warm throughout the winter. 3With three?levels switch adjustment, you can adjust the temperature as you required, bring you more convenience. 4High?quality neoprene materials with stable performance and high reliability, non?slip and wear?resistant. 5Using USB power supply (not included) method, simpler and more convenient to use, making your hands not afraid of cold when riding. 1 xHandlebar Warmer