Under Armour Men's HeatGear&reg; Sonic Compression Shorts, Black, Extra Large, 2-Pack The Under Armour Mens HeatGear Sonic Compression Short offers ultra compression for a super tight fit Increases your muscle power The 4way stretch fabric acts as a second skin for superb mobility While smooth chafefree flatlock seam construction provides ultimate comfort Antiodor technology prev Ents odor causing microbes and moisturewicking fabric keeps you cool and dryTechnical Benefits HeatG Ear Moisture Transport System Anti Odor Fabric Polyester Elastane Inseam 6