The Baby Works™ Cloud 9 Head Support is specially designed to support babies head by reducing pressure on cranium. It is perfect for use while at home in a bouncy seat or swing or while on the go in a stroller or carseat. The memory foam support is soft & comfortable and cradles baby's head perfectly. As part of Baby Works™, the Cloud 9 Head Support comes with a hypoallergenic fitted pillow case, made using rayon from bamboo fibers, which is soft and gentle, keeping the pillow cool and comfortable.