Personalized That Was Pretty Cool 100 Days Of School Baby Bodysuit. Whether it's a special event at school or a casual day out, our "That Was Pretty Cool 100 Days Of School" design is a must-have for your little one. It's a great way to commemorate this important milestone and create lasting memories. Get yours today and let your child shine on their 100th day of school! 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.