Nike Pro - Core Tight Short-Sleeve iD Top It's called the Athlete's Secret Weapon. What's not so secret is that it's the first thing you'll want to put on your bodywhether training, at practice or in the game. Engineered with flat seams positioned away from high-contact areas, chafing is minimized. A tighter fit helps reduce bulk, increasing comfort and range of motion. You can also customize Nike Pro Core as a team or an individual. Either way, you've just found your secret weapon. Nike Pro technology for support, protection and breathability Dri-FIT fabric to wick sweat away and help keep you dry and comfortable Choice of fitted (fits like a snug T-shirt) or tight fit Four customization options: choice of inspirational words or sports icon at front; two-digit number or two characters at back; sport icon at right shoulder; two-digit number or two characters at left shoulder Fabric: 84% polyester/16% spandex Machine wash Imported