Personalized Mimi Bear Grandmother Toddler Long Sleeve T-Shirt. Cute Mimi Grandma bear tee shirt makes a fun Mothers Day gift for grandmother from her tribe. 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.