Personalized Gym Teacher Sneakers Long Sleeve T-Shirt. Gym Teacher with the word Gym wearing sneakers is a humorous design to make your favorite gym teacher smile on birthdays, holidays, graduations and back to school. 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