New. Tested. Please see all photos for more details. Smoke free. Fast shipping. Check out my page, bundle and save! Marked size Unisex Medium, Skin-Fit - according to manufacturer 26" front length, 18" across chest. Heated, skin-fit base layer that is made from a moisture-wicking, lightweight, breathable, stretch technical fabric. The long sleeve, base-layer with thumbhole cuffs is so versatile it can be worn under your favorite shirt, sweater, jacket or simply by itself to provide enough warmth as a parka jacket without the restricting bulkiness. Control every zone with this heat-on-demand base layer. * Removable batteries * Machine washable * 4 Radiant Core Heating Levels including High, Med, Low & “Smart Pre-Heat” * 6-8 hours continuous run time (depends on the number of batteries and outside conditions. * Universal USB charging