100% preshrunk cotton. Ash Grey is 99/1. Sport Grey is 90/10. seamless rib at neck. taped shoulder-to-shoulder. double-needle stitching throughout. Antique Colors (Cherry Red Irish Green Jade Dome Orange) are 90/10. Dark Heather Heather (Military Green Red Sapphire) Midnight Lilac are 50/50. Blackberry Russet Safety Green Orange