Good Vibe-Ration Tee 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 Good Vibe-Ration T-Shirt. Mens, Women's, Kids, Boys, Girls, Children's and Toddlers tshirt sizes. Lightweight, Classic fit, Double-needle sleeve and bottom hem