Personalized Rock Collecting Eat Sleep Rocks Repeat Long Sleeve T-Shirt. Rock collecting gift idea says eat sleep rocks repeat and makes a fun present for a geologist or any rockhound. 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