Distinct Name: BlackGender: Mens/UnisexColor: BlackSize: 2XS-XSPrimary Color: BlackThe Vest begins warming your core within seconds using a compact, rechargeable 7V lithium-ion battery. The advanced heating technology makes this vest the perfect heated mid-layer for hunting, fishing, outdoor sports, or just enjoying warmth during any outdoor activity. Wind resistant, water repellent ripstop Nylon and expandable made with Lycra spandex side panels. Heating elements are located in panels on the chest and back. Battery lasts 2-8 hours (depending on setting). Max Heat 135deg. F. Package Includes Everything Needed For Operation. Wall Charger. 7.4V / 3500mAh Rechargeable Lithium-Ion Battery. Chest: 32-37in.