These shirts are made of 4.5 oz 100% ring spun cotton. The Antique colors are made of 90/10 cotton/poly. The Heather colors are made of 35/65 cotton/poly. No size 3XL in Sand, Orange, Cherry Red, Cardinal Red, Azalea, Dark Chocolate, Light Blue, Kiwi, Military Green, Charcoal, Indigo Blue or Irish Green