Seat cushion brand new unopened Good Breathability: The cover of the orthopedic seat cushion made with 3D mesh fabric,which is ventilated. Using this desk chair cushion will prevent your buttock from sweating and keep your buttock cool for long time sitting. High Quality Memory Foam: Made of 100% slow rebound memory foam,our pressure relief seat cushion is soft, not as hard as other memory foam tailbone cushions for pressure relief.Uses the heat from your body to shape the contour of your buttocks, evenly dispersing pressure caused by long time sitting, feeling more comfortable. Humanity Design:Double designed with anti slip rubber bottom and elastic straps, not only does it prevent the butt cushion for pressure relief from moving, but it also reduces the probability of accidentally placing the cushion for tailbone pain elsewhere and not being found. Good Material:In addition to high-quality memory foam and 3D mesh cover, this tailbone pain relief cushion also uses durable non slip fabric and buckles as shown in the pictures, but it is more cost-effective than other products of the same level. Applicable Chair Types: This seat cushion uses as a coccyx pillow for tailbone pain in office chairs,car seats, wheelchairs etc. Tailbone Pain Relief and Sitting Posture Improved:Not only does it helps alleviate pressure on your hips, tailbone, and lower back, reducing pain and discomfort during long hours of sitting