8.0 oz., pre-shrunk 50/50 cotton/polyester Heather Sport colors are 60/40 polyester/cotton Reduced pilling and softer air-jet spun yarn 1x1 athletic rib knit collar, cuffs and waistband, with spandex Double-needle stitched cuffs and waistband Safety Green is compliant with ANSI/ISEA 107 High Visibility standards Tear Away Label