Under Armour Heatgear Mens Compression Shorts - Black Under Armour showcases baselayer innovation with the Heatgear compression shorts that provide performance without the weight. Worn as a second skin, the tighter fit increases muscle power and makes you feel indestructible. The contrast waistband and the small logo at the hem are signature hits of detail. Upgrade your training regime and team these black Under Armour compression shorts witha matching compression tee.