Features: 1.Lightweight heated vest: Lightweight insulation allows you to wear in a variety of ways in unrestricted motion; windproof. 2.Electric heated vest: powered by any 5V / 2A mobile power supply, USB plug compatible with most mobile power supplies on the market (battery needs to be purchased separately); 3 seconds fast heat, 0 radiation safe - fast and smooth heating without radiation. 3.USB charging and heating vest: There are heating zones on the front and back, from preheating to very high 3 heating levels. 4.Heating vest size: suitable for everyone (7 sizes of S~4XL), suitable for men, women, men and girls. 5.Suitable for all occasions: suitable for daily commuting, walking the dog in the brisk autumn air, wearing for your favorite football team, wearing a winter jacket, even wearing a cold office Ideal for family members, friends, employees, enjoying cycling, hiking, camping, fishing and other outdoor activities in autumn and winter. Specifications: Name:Heating vestMaterial:polyesterfiberSize:S~4XLColor:BlackPackage list:1*Heating vest