Set your sights on the impossible. Run towards it. Whether setting a PR or completing your first marathon, this ultra-light adidas running singlet offers distraction-free performance to help you achieve your goals. It fits slim for a barely-there feel and has perforations to keep air circulating. The side seams are shifted forward and abrasion points are taped over to reduce chafing and friction. Slim fit Round neck 86% polyester (recycled), 14% elastane Perforated fabric Side hem slits Bonded neckline and armholes