ThermaFur 5529 Air Activated Heated Vest, Medium 100% Fleece Made in the USA and Imported High collar w/zipper closure and two zippered pockets; ideal for a wide range of cold weather applications Durable, water repellant upper soft-shell fabric w/fleecelower body and a total of eight (8) built-in Body Warmer pocketsfor total body comfort Include eight (8) HEAT PAXTM Body Warmers (5540) for up to20 hours of warming relief for your body XS, S, M, L, XL, 2XL, 3XL