The TechNiche, Heat Pax powered, Heated Vest is ideal to be worn under any race clothing or to simply keep warm at any outing. Full Fleece inner with Wind and Water Resistant Softshell outer are ideal for any condition. Every vest includes pockets to hold the included TechNiche, Heat Pax powered, large warmers which will heat the vest for up to 24hours. Features: High collar, handy zippered front pockets, adjustable elastic cord at bottom and zipper closure; delivers additional coverage and protection where you need it most 100% Black softshell vest to help hold in heat, with black poly-cotton elastic trim and a total of 8 built-in Heat Pax Body Warmer pockets Includes 8 Heat Pax Body Warmers (5540) that deliver steady, comfortable heat to your torso for 24+ hours Sizes: XS, S, M, L, XL, 2XL, 3XL Color: Black TechNiche Heating Fleece Vest Softshell, Powered by Heat Pax