ColdGear® Reactor adapts the garment's ventilation depending on the activity you perform. Reactor encapsulates the heat during low-intensity training and activates the ventilation during movement. Balaclava hat protects the face during the workout - The garment is equipped with brushed panels on the inside for a soft next to skin feeling - Signature Moisture Transport - System absorbs sweat and keeps you dry and light - Raglan sleeves for the best possible mobility during the workout - Thumb holes encapsulate the heat and hold the garment in place. 91% polyester, 9% elastane