4.2 oz./yd² (US) 7 oz./L yd (CA), 100% Airlume combed and ring-spun cotton, 32 singles Ash is 99/1 Airlume combed and ring-spun cotton/polyester Athletic Heather & Black Heather are 90/10 Airlume combed and ring-spun cotton/polyester Alternate Heather CVC/Blend colors are 52/48 Airlume combed and ring-spun cotton/polyester Pre-shrunk Slim fit Longer-length body Shoulder-to-shoulder taping Side seams Tear away label This product meets the following Sustainable Style subcategory - Socially Conscious Manufacturing - This product was made in a facility that partnered with or is accredited by the Fair Labor Association and made in a facility that is WRAP and bluesign certified. "CLICK HERE for fit comparison with 6400"