Under Armour NFL Combine Authentic Warp Speed Youth (8-20) Short Sleeve Top Large 81% polyester, 19% elastane Short-sleeve performance t-shirt Smooth HeatGear fabric for chafe-free comfortMetallic HeatGear adds muscle compression Small NFL Combine graphic above left hem 4-way stretch fabrication Superior moisture transport system with accelerated dry time Full mesh back for ventilation Anti-odor technology Raglan sleeves