Personalized Physics Oval Toddler Long Sleeve T-Shirt. Physics text in a in an oval of warm colors is a fun science design for physicists, teachers and students at back to school, graduation, birthdays and holiday 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.