These Outdoor Rain Proof Flame Retardant Heating Pants are made of 50% Cotton + 50% Polyester and feature 3-speed temperature control, USB charging port, and a stylish cargo design. Perfect for outdoor activities or any cold weather scenario. Features: 1. Electric heated pants made of 50% Cotton + 50% Polyester blended, with dense stitching, giving you a comfortable and soft feeling, 3-speed temperature, pressing the on/off button to change. 2. Not only as a winter warm pants, but also be a cargo pants with a stylish look. In addition, the cold-proof pants can be washed by hand or machine. 3. This warm trouser equipped with a USB plug, 5v safe voltage, can be powered by USB, designed with zipper pocket can hold the power bank. 4. USB heating pants are perfect for all outdoor activities, such as commute, riding, skiing, hunting, sporting events or any cold weather scenario. 5. M, L, XL, XXL, XXXL optional, please check the size before purchasing, hand wash or machine wash in cold water is recommended, do not use bleach. Specification: Material: 50% Cotton, 50% Polyester Product Color: Black, Dark Grey Product Size: M, L, XL, XXL, XXXL Product Weight: 700g Package Included: 1 x USB Heated Pants