Personalized Gym Teachers Rock White Text Long Sleeve T-Shirt. Gym Teachers Rock text with a happy shaking rock is a funny gift design for physical education teachers and trainers. 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