Skydiving Shirt - Learn To Skydive Because Zombies Can't Fly 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 Skydiving Shirt - Learn To Skydive Because Zombies Can't Fly. Funny Sky Diving T-Shirt. Lightweight, Classic fit, Double-needle sleeve and bottom hem