Personalized Tropical Retirement Watercolor Toddler Long Sleeve T-Shirt. Happy Retirement! Watercolor flamingo tropical theme for the senior about to retire ... and loving it! Great gift idea for a retirement party. 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.