The Under Armour 4" HG Gotta Have It Mid features HeatGearŪ technology that works to wick moisture away from the skin, leaving you comfortable, cool, and dry. The Under Armour compression increases performance and your recovery time. Anti-odor technology provides freshness and the hidden pocket on the back waistband allows for storage. HeatGearŪ is best for weather between 75-100 degrees. Compression fit. 4" inseam. 90% polyester/10% spandex. Imported.