I Love Em Fat T-shirt Mountain Bike With Fat Tires Tee 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 Mountain biking tshirt, mountain biker gift for men, women, boys and girls. Cycling humor. Lightweight, Classic fit, Double-needle sleeve and bottom hem