The Under Armour Scent Control Neck Gaiter keeps you warm, comfortable, and difficult to detect on long, cold days in the field. High-pile ColdGear fleece fabric - an 87% polyester, 13% elastane blend - is super-soft and incredibly cozy. Under Armour's exclusive Scent Control technology traps and suppresses the growth of odor-causing bacteria so you stay fresher longer; plus, it recharges better, works 10 times longer, and is quieter and lighter than carbon. Imported. One size fits most.