Personalized Science Rocks Toddler Long Sleeve T-Shirt. Science Rocks text with three rocks holding a chemistry beaker, magnify glass and a telescope is a humorous science design for back to school, 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.