Laughter Is Awesome Medicine 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 Unique gift ideas for laughter yoga lovers and teachers. Also these make great fun yoga gifts for Christmas, Birthdays or any special occasion. Lightweight, Classic fit, Double-needle sleeve and bottom hem