Personalized Under Arm Hair Black Toddler Sweatshirt. Under arm hair, we've all got it. You can finally wear a shirt to tell the world you're a part of club and you don't need to work out to be in it! Keep your little one cozy and stylish with this soft and durable toddler sweatshirt. Designed for comfort and ease of movement, it features a classic fit with ribbed cuffs and hem for added warmth. Perfect for everyday wear, playtime, or chilly outings, this sweatshirt is made to withstand the adventures of an active toddler