Quality assurance: thickened PVC washable, non slip cover to ensure pressure relief, specially designed for extended use of elastic structure. Stress relief: it helps relieve stress, promote healthy posture, weight distribution, and relax exercise. Promoting circulation: if you often sit for a long time, you can put it in your seat, it can promote good circulation. Comfortable seats: this surprisingly comfortable cushion makes it comfortable to sit on the hardest ground. Application: suitable for office chair, outdoor tourism, camping, fishing grounds and other places standard: Status: brand new Material: PVC Color: Gray white Size: about 56 * 27 * 15cm / 22 * 10.6 * 5.9in Weight: About 222 G Note: due to the differences between different monitors, the picture may not reflect the actual color of the item. Thank you very much!