World Okayest Brother T-Shirt 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 World Okayest Brother World Okayest Sister World Okayest Mom World Okayest Brother In-law T-Shirt. Visit our Store for more items! Lightweight, Classic fit, Double-needle sleeve and bottom hem