Laugh Stress Goodbye Laughter Yoga 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 Express your passion, interest or hobby by wearing this stylish novelty tee. Also it makes an awesome Christmas gift or Birthday present for fun loving people everywhere. Lightweight, Classic fit, Double-needle sleeve and bottom hem