Personalized Triathlon Sports Quote Must Tri Long Sleeve T-Shirt. Triathlon Long Sleeve T-Shirt - Athletic Heather with colorful swimming biking running logo banner and must tri sports quote. 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