Personalized 100 Days Of School 100 Days Of Cool Baby Bodysuit. Our 100 Days Of Cool design features a playful and vibrant design that will bring a smile to anyone's face. Whether you're a student, teacher, or parent, this apparel is a fun and stylish way to commemorate the 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.