Personalized Unicorn Christmas Adult Sweatshirt. Unicorn Christmas - A cute little unicorn wearing a Santa hat uses some unicorn magic to make a sparkling Christmas tree with rainbow decorations. 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.