WARNING! This product will melt when exposed to extreme heat or open flames, posing a risk of serious injury where melted product comes into contact with skin!. Ultra-light UA Tech™ fabric has a softer, more natural feel for superior comfort. 4-way stretch fabrication improves mobility and accelerates dry time, while maintaining shape. Signature Moisture Transport System wicks sweat to keep you dry. Raglan sleeve construction and smooth flatlock seams enhance range of motion and prevent chafing. 4.6 oz. Polyester/Elastane. Imported.