I'm The Psychotic Mom of Twins T-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 Twins T-Shirt - Funny Twin Shirts Psychotic Twins Mom Shirt - Twins Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem