Proud Plumber, Funny Plumbing Tshirt 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 Using my high school diploma to fix what your college degree messed up! Lightweight, Classic fit, Double-needle sleeve and bottom hem