Seamless collection of smooth, breathable fabric is designed to help reduce chafing, encourage ventilation and wick away sweat to help you stay dry. Designed for running and training, giving you a better workout. Mesh fabric placed at the high-sweat area for needed ventilation. Feature & Fitting: Seamless Collection Design for running and training Round neck and raglan sleeves Slim fit, show your muscle curve Fabric: Fast sweat-wicking keeps you dry Minimal seams to reduce chafe Stretch, good elasticity, no sense of restraint 51% Polyamide, 44% Polyester, 5% Spandex