Rosin Tech 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 Rosintech, the original. Rosin, wax, shatter, hash oil, the purest solvent-free globs Lightweight, Classic fit, Double-needle sleeve and bottom hem