Product Review

Under Armour Base 4.0 Crew. Your first -- and best -- layer of defense against extreme cold! Reliable warmth for the most extreme conditions! This Under Armour Base 4.0 Crew is Under Armour's thickest, warmest base layer, making it ideal for cold-weather hunting, sports and chores. Equipped with ArmourBlock anti-odor technology to help prevent and eliminate tell-tale odors. Build a better base: Body is made of 7.25-oz. 96/4 polyester / elastane; Cuffs and neck are made of 4.5-oz. 93/7 polyester / elastane; Fitted style is designed to fit close to your body without the constriction of compression; Flatlock stitching won't chafe or irritate; Raglan sleeves provide full range of motion; ArmourBlock neutralizes odor-casuing microbes to keep your gear smelling fresher, longer; Imported. State Size. Under Armour Base 4.0 Crew, Black