New without tags Under Armour men's EVO scent control mock base layer shirt. Size XL. 87% Polyester, 13% Elastane ColdGear Compression fit The Under Armour ColdGear Infrared Scent Control EVO Mock Base Layer Shirt has a coating on the inner layer of your garment that absorbs and retains your own body heat, so you stay warmer longer. The Scent Control Technology traps and suppresses growth of odor bacteria, recharges better and works 10x longer than carbon, and is quieter and lighter than carbon. The shirt features brushed Evolution ColdGear fabric and ergonomic flatlock seams. It is designed to fit very close to the body without the constriction of compression.