Our Get Along Shirt - Parenting Hack 101 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 You've seen the shirt, now watch it's magic as it calms your kids down Most times they don't even need to wear the shirt for the magic to work Lightweight, Classic fit, Double-needle sleeve and bottom hem