I-pure items xveve decvce, Black Cotton Design for supporting caudal vertebrae - relieve back pain and stop the pain! Our revolutionary design for supporting caudal vertebrae can reduce the stress and pain of caudal vertebrae (tailbone). It can better fit your caudal vertebra and no burden will be increased even if you have a long sitting position, therefore symptoms such as numbness and pain due to the lack of blood supply for caudal vertebrae can be eliminated. The breakthrough and innovation of patent technology: the material of our new cushion is a high-class shape-memory foam which is designed by our engineers for two years, and it is more suitable for human engineering compared with the previous U shape memory cushion. The innovative design of hollow space for ventilation can increase the permeability and prevent bacterial propagation, therefore, you will feel no discomfort on your genitals and buttocks due to ventilation. High quality durability Made from 100% Memory Foam that will not flatten out over time, our cushions contour to your body while promoting optimal support for your back and spine. Our materials are in line with the requirements of environmental protection. Anti skid materials are used at the bottom to avoid any sliding; the disassembly and cleaning of our cushion cover are convenient, which meets the needs of each family.