UA Heatgear Armour 2.0 Long Compression Short Tough, lightweight Heatgear fabric. Stretch-mesh gusset and inseam panels deliver strategic ventilation. Updated ergonomic design keeps seams off high abrasion areas. 4-Way stretch fabrication allows for greater mobility. Moisture transport System wicks away sweat. Anti-odor technology. Wider, 2" elastic waistband.