My Carousel Designs Custom Throw Pillow. Perfectly yours! Add a personal touch to any space with a Carousel Designs plush, personalized throw pillow. Each pillow cover is printed exactly the way YOU design it on antique white, certified organic cotton with certified organic inks, then expertly sewn with a hidden zipper. Soft synthetic blend insert included. Our throw pillow is available in an 18" or 20" square size and will add soft texture to your nursery, chair, or any room in your home.