Expertly designed with 92% polyester and 8% spandex stretch knit material, the Ol'Tom Men's Performance Stretch-Fit Half Mask guarantees comfort and flexibility. With perforated nose and mouth holes, it offers increased breathability for optimal performance. Features4.4 oz/150 GSM 92% Polyester 8% Spandex stretch knit materialPerforated nose and mouth holes for increased breathability Provides both comfort and concealment