Made of Polyester fiber and comfort memory foam.Breathable hole design helps to prevent bedsore.It is durable and will not flatten out with prolonged use. Will not deflate like inflatable donut cushions.Promotes good posture and healthy weight distribution for hours of comfortable sitting. Great for use on any chair, car , plane, and wheelchair.Reduce the pressure on tender areas when sitting.As an effective solution to ease the pain of sitting on hard chairs.It is portable and can be taken with you all over, and can be used on any kind of chair-WHEELCHAIR, OFFICE CHAIR, PLANE, CAR, etc.Zipper design, the cover can be easily removed to wash, to get it looking fresh and clean.Perfect for pain and pressure relief for haemorrhoids, hip bursitis, and universal coccyx pain.Provides comfort and gentle support, helps to relieve pain and stress when sitting.colour: navy blueMaterial: polyester fiber + memory foamSize: 38x38cmPackage Contents:1 x cushionOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.