Motorcycle Winter Heating Underwear Set. Features: Made of Far-infrared Carbon Fiber Wire Heating Element Layer and Soft Skin-friendly Materials to Ensure a Warm and Comfortable Touch. Intelligent Temperature Control, Heated with Knees, Back and Waist. Powered by Any 5V / 2A USB Portable Charger, the USB Plug is Compatible with Most Portable Chargers on the Market. Which Can Start Heating in 30 Seconds, Long Duration and Long Heating Time. 3-level Adjustable Temperature with Indicator Light to Adjust the Required Temperature. Safety Insulation Design, Built-in Thermal Protection Module, 5V Safety Voltage, Once Overheated, It Will Stop Running Until the Heat Returns to the Standard Temperature. The Washing Machine Does Not Affect the Internal Heating System to Heat Clothes Safely and Durable. Support Hand / Machine Cleaning. Heating Underwear Helps to Improve Blood Circulation, Enhance Metabolism, Which is Very Suitable for People Who Are Afraid of Cold, Raynaud's Disease, Arthritis, Poor Blood Circulation, and Stiff Joints. The Best Solution for Various Outdoor Activities, Such As Skiing, Fishing, Jogging, Hunting, Biking, Hiking Motorcycles, Protecting Climbing Dogs, Running, Snow Removal, Etc. Specifications: Name: Heating Thermal Underwear Condition: New Color: Black Gender: Men Material: 95% Cotton and 5% Spandex, Carbon Fiber Wire Size: S, M, L, XL, XXL Package Includes: 1 X Heating Thermal Underwear Tops 1 X Heating Thermal Underwear Pants How to Use : Charging - Fully Charge the Power Bank, Before Use. Plug-in Type-connects the Power Bank to a Plug Located in the Pocket. On-Press and Hold the on / off Button for Three Seconds. The Initial Temperature is 55-65 Degrees (red LED), the Intermediate Temperature is 45-55 Degrees (blue LED), and the Lowest 35-45 Degrees (green LED). Cleaning and Maintenance : Machine Washable. When Washing, Remove the Power Bank. In the Case of Machine Washing, Please Wash Your Clothes in a Laundry Bag. To Ensure the Longevity of Clothes, Try to Avoid Strong Washing and Normal Drying. . Your order will be shipped from abroad so please allow the necessary time of at least 14 work days for delivery due to ongoing delays in postal deliveries globally.