Personalized 1st Birthday 1 Year Old Outfit Toddler Sweatshirt. Funny it's my 1st birthday design for boy or girl with birthday hat and stars. 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