Nike Dri-FIT Knit Short Sleeve T-Shirt - Men's The Nike Dri-FIT® Knit Running T-Shirt is an ultra-light t-shirt designed for the highest performance and style. Seamless construction, elastic taping on the back of the neck, and raglan sleeves enhance comfort during high activity. Dri-FIT fabric pulls moisture away from your body to keep you cool and dry, and reflective elements enhance visibility for night runs. 56% polyester/44% nylon. Imported.