Koi Fish T-Shirt - Chinese Koi Carp Fish Graphic Shirts 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 Koi Fish T-Shirt - Chinese Koi Carp Fish Graphic Shirts. Koi Fish t shirt, Fish Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem