1、Ergonomic: This cushion features a carefully designed U shape that shapes to the contours of your body for maximum comfort, effectively reducing discomfort in the hips, tailbone and sciatica without compromising on support. 2、Breathable: This office chair cushion is made from breathable material to ensure ventilation, preventing overheating and discomfort when sitting for prolonged periods of time, whether in the office, car or wheelchair. 3、Anti Slip: With a non slip bottom, this car cushion stays firmly in place on any surface, providing stable support without the need for constant adjustments, allowing you to concentrate on work or relaxation. 4、Multipurpose: Ideal for office chairs, cars, wheelchairs or gaming chairs, this office cushion provides versatile comfort wherever you need it, making it the great companion for work and leisure activities. 5、Lasting Support: The ergonomic cushion stands up to regular use and retains its shape and support over time, ensuring prolonged relief from discomfort, as well as enhancing sitting posture and reducing low back discomfort, making it a reliable investment in your health. Item Type: Support Tailbone Cushion Size: Approx. 43 x 35 x 12cm / 16.93 x 13.78 x 4.72in Material: Polyester, Memory Foam 1 x Memory Foam Bone Relief Cushion