Pre-shrunk 100% cotton, jersey knit 6.0 ounce t-shirt. Taped neck and shoulders. Double-needle sleeve and bottom hems. Seamless double-needle collar. Quarter-turned to eliminate center crease. (Ash Grey contains 99% cotton/1% polyester, Sport Grey and Antique Colors contain 90% cotton/10% polyester. All other Heather colors and all Safety colors contain 50% cotton/50% polyester. Safety Green and Safety Orange conform to ANSI/ISEA 107-2010 High Visibility Standards.) e.