5.3 oz., 100% preshrunk cotton Ash Grey is 99% cotton, 1% polyester Antique (Cherry Red, Jade Dome, Irish Green, Sapphire, Orange) and Sport Grey are 90% cotton, 10% polyester All heather colors as well as Sunset, Safety Pink, Russet, Neon (Green, Blue), Midnight, Lilac, Blackberry, Tweed, Safety Green, S. Orange are 50% cotton, 50% polyester The color "Natural" is made with unprocessed, unbleached cotton, which results in small black flecks and plant fibers throughout the fabric. Safety Green is compliant with ANSI / ISEA 107 high visibility standards Double-needle sleeve and bottom hems Taped neck and shoulders Classic midweight fabric Classic fit tubular body 7/8" collar Classic fit Tear-away label