8 oz.(US) 13.3 oz.(CA), 50/50 preshrunk cotton/polyester Heather Sport colors: 60/40 polyester/cotton Safety LnkGreen: Compliant with ANSI / ISEA 107 Classic fit Air jet yarn for softer feel and reduced pilling Double-needle stitching at shoulders, armholes, neck, waistband and cuffs 1x1 rib with spandex for enhanced stretch and recovery Grey pearlized tear away label