Personalized Swimming Rocks Long Sleeve T-Shirt. Swimming Rocks text with three happy, dancing rocks with swim goggles and flippers is a humorous gift design for swimmers and divers during pool and swim team season. 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