Personalized 100 Days Of School 100 Days of Cool Baby Bodysuit. This Happy 100 days of school design is the perfect outfit for kids looking to celebrate their 100th day of school in style. With its cute design, it is sure to make your little one stand out. Whether it's for a boy or a girl, this outfit is a great choice. Our one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.