Personalized Happy 100th Days Of School Baby Sweatshirt. Our apparel featuring the Happy 100th Days Of School design is a great way to show off your school spirit and celebrate this important milestone. Whether you're a student, teacher, or parent, you'll love wearing this fun and festive design. It's a great conversation starter and a wonderful way to bring the whole school community together. 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.