Personalized 1st Day of Preschool Unicorn Back to School Adult Sweatshirt. 1st day of preschool or Pre-K design has unicorn face for a school student. Stay warm and stylish with this classic adult sweatshirt, perfect for everyday comfort. Crafted from soft, durable fabric, it features a relaxed fit for added coziness. Whether you’re lounging at home, running errands, or enjoying outdoor activities, this versatile sweatshirt is a wardrobe essential for any season.