Suitable for: School, , Home. Tips: When using, place the support bar against the groove, adjust it in four positions, and secure it. Crystal velvet fabric. It stores neatly and takes up little space, and is designed to enhance nap quality. It uses memory foam to relieve pressure, and the hollow breathing area features a cutout design for smooth breathing. You can position your arms freely without feeling numb. It's suitable for both children and adults, giving you a more comfortable nap space.