Personalized 100 Days Of School 100 Days Of Cool Baby Sweatshirt. 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. Keep your little one warm and comfortable with this soft infant crew fleece sweatshirt. Made from a cozy cotton poly blend, this pullover offers just the right amount of warmth for cooler days without feeling bulky. The snap-tape neck closure makes dressing quick and easy, and the ribbed collar, cuffs, and hem provide a secure fit that moves with your baby. Durable stitching and side-seam construction help the sweatshirt maintain its shape and softness through repeated washing. Great for everyday wear, daycare, playtime, or layering during fall and winter, this fleece sweatshirt is a practical and comfortable essential for any baby wardrobe.