The Under Armour Vented Compression Short is made with a nylon fabric that delivers performance and durability. Ventilation panels throughout crotch, inner leg and tailbone. Superior moisture transport quickly moves moisture away from the body. 1.5" waistband. Anti odor technology, compression fit. HeatGearŪ technology is best for weather between 75 degrees and 100 degrees. 85% nylon/15% spandex. 7" inseam. Imported.