5.3 oz., 100% preshrunk cotton; Antique (Cherry Red, Jade Dome, Irish Green, Sapphire, Orange) and Sport Grey are 90% cotton, 10% polyester; Sunset, Safety Pink, Russet, Neon (Green, Blue), Midnight, Lilac, Blackberry, Tweed, Safety Green, S. Orange, Dark Heather, Graphite Heather, and Heather (Military Green, Radiant Orchid, Red, Sapphire) are 50% cotton, 50% polyester; Ash Grey is 99% cotton, 1% polyester; Made with sustainably and fairly grown USA cotton;Seamless rib at neck; Taped shoulder-to-shoulder; Double-needle stitching throughout; Tear away label; Safety Green is compliant with ANSI / ISEA 107 high visibility standards; Quarter-turned to eliminate center crease; 7/8" collar; Classic fit; Gildans manufacturing process utilizes 45% renewable energy; Gildan’s Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in;