Personalized National Bike Month Biking Cyclist Long Sleeve T-Shirt. Biking design has person riding a bicycle with quote that says May is National Bike Month on this Long Sleeve T-Shirt - Athletic Heather with distressed style logo. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL