I Can't Keep Calm I'm The Mother Of The Groom Wedding Shirts Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Get this for you or the mom, great to use as wedding party shirts Lightweight, Classic fit, Double-needle sleeve and bottom hem