Made from a lightweight engineered knit fabric, the Nike Dri-FIT Aeroswift T-Shirt features speed-based details like bonded seams for reduced bulk, and Swoosh logos in a non-reflective finish that won't catch flash photography as you break the tape in a new PB. The ultra breathable material is selected to help you perform at your best for longer, and it also features Dri-FIT ADV, Nikes fastest acting sweat wicking technology.