Under Armour NFL Combine Authentic Coreshort Prima - Men'sWear the same gear as top NFL prospects do with the Under Armour 9" NFL Combine Authentic Core Short Prima! The unique, patented "X" band design supports the body's core anatomy: the hips, groin, pelvis, quads, and hamstrings. This strategically angled stretch woven fabric enhances the body's functional movements while keeping the muscles locked in tightly. Under Armour's moisture-wicking system works to keep your skin cool and comfortable at all times. HeatGear® is best for weather between 75 and 100 degrees. 9" inseam. 84% polyester/16% spandex. Imported.