Constructed with an insulated quilted nylon shell to help insulate the body's core and a bonded polyester softshell fleece with spandex for a stylish and athletic fit. The Radiant Vest will become your everyday garment whether it is on the slopes, on the golf course or on the road.  SUPERIOR HEATING The Radiant Heated Vest is designed to provide deep penetrating heat to your core to help you maintain thermal comfort. Wear it as a stand alone vest or a mid-layer to help you keep extra warm on those extreme cold weather days. The Radiant Heated Vest features a four zone heating system that targets both sides of the chest and the upper/middle back between your shoulder blades.  The patented Zero Layer® Heat System provides optimal heat transfer, helping the heat to penetrate deep in to your body’s core for a superior warming experience.    MACHINE WASHABLE The Volt Heated Radiant Vest is machine washable as long as you remove the battery before washing. Our patented heating system is completely waterproof and used a weatherproof USB reversible plug. FEATURES: Includes one VB5TEN 5v 10,000mAh USB rechargeable battery and charging cable Choose from 4 power level settings and up to 10+ hours of heat per charge Safe & Durable 5v Heating Technology developed and patented by Volt Heated Clothing Machine Washable External push button Bluetooth controller switch with 3 power level settings APPROXIMATE HEAT OUTPUT/RUN TIMES: High (RED) = 150º F for 5+ hours Medium /High(WHITE) = 130º for 6.5+ hours Medium (GREEN) = 115º  for 8+ hours Low (BLUE) = 115º  for 10+ hours   Patented Zero Layer® heat system eliminates bulk while providing more efficient heat transfer. RADIANT Mens 5v Heated Vest