Labled the athletes recovery sleepwear, the Under Armour TB12 Sleep Short Sleeve Tee is designed for the focus, health conscious athlete. Muscle recover is of great importance for athletes that train and compete at high levels. This top is fitted with TB12 Recovery Technology used by professional football player, Tom Brady. TB12 Recovery Technology features a pattern on the inside of a soft, comfortable fabric. Bioceramic material emits Far Infrared waves that have been scientifically linked with helping to improve muscle recovery and enhance sleep. Fitted: Next-to-skin without the squeeze. Super-soft, modal fabric is breathable and perfect for lounging and sleep. 4-way stretch material provides a comfortable, adaptive fit. Moisture-wicking properties pull sweat away allowing fabric to dry quickly.