Why do you choose our seat cushion?Our seat cushions firmly support your back and pelvis area. Keep your tailbone hanging so your weight won't stay on it. This balance eliminates the pain experienced when your weight is placed on the tailbone.Feature:Air holes on both sides, well ventilated.Healthy posture and proper spine alignmentFoldable design for easy storage and carryingDurable and long lastingCan shape the hip line.Can relieve stress.specification:Material: External short plush/elastic net, internal finely divided latex.Product color: pink / rose / purple / blue / brown / greenType: Seat cushion / cushion / backrestProduct size: 45 * 31 * 10cm / 17.7 * 12.2 * 3.9 inchesProduct weight: 900g / 1.86 poundsPackage Included:Cushion x 1