This running tank top is made of seamless knit fabric that's breathable and has an ultra-smooth feel against your skin. The fitted tank has deep armholes and mesh ventilation to help make warm-weather workouts a breeze. Fitted fit is one size down from regular sizing for a tight feel Scoop neck Sleeveless 53% nylon / 39% recycled polyester / 8% elastane seamless Soft and stretchy; Seamless adidas Primeknit Mesh ventilation inserts; Reflective details This tank top is made with recycled polyester to save resources and decrease emissions