Under Armour Rush Seamless Fitted SS-GRY T-shirt. As your body radiates energy, the mineral-filled substance absorbs it and bounces it back into tissues and muscles, improving endurance and strength.4-Way Stretch production allows for greater mobility in any direction.The material is a great sweat wicker and it dies very quickly.Color-coded places where UA technology is most needed.The almost seamless design eliminates friction and minimizes skin rubbing.Celliant products have been designated by the FDA to increase local circulation, leading to faster recovery.Small Under Armour logos, typical of UA RUSH.Material: Nylon / Polyester.