Personalized Sweaty Gym Teacher Toddler Long Sleeve T-Shirt. Gym Teacher, if there is no sweat, you're not working hard with water drops is a a humorous design physical education teachers at back to school, birthdays, holidays and graduation. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.