Personalized Grandpa's Little Slugger Toddler Long Sleeve T-Shirt. Cute Toddler Long Sleeve Tee - Black for grandpa's home team with baseball and bat says GRANDPA'S LITTLE SLUGGER. The bases are loaded, batter up! Perfect for future baseball stars. 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.