Personalized Some Ding Toddler Long Sleeve T-Shirt. A percussion triangle with text, Triangle, it has that certain some-ding is a humorous music design. Fun gifts for musicians, teachers and students at back to school, birthdays and holidays. 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.