Personalized Mimi's Little Elf Christmas Holiday Grandchild Toddler Long Sleeve T-Shirt. Red and green striped elf feet for Mimi's little elf on a Christmas holiday Toddler Long Sleeve Tee - Red for grandkids. 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.