METRON Extra Thick Height Booster Seat Cushion Suitable All Type of Chairs Floor wheelchairs | Chair Pad Supportive Sponge | 16”x16”x5” inches| Washable Dark Color Cover | Pack of 1 Pc5" THICKNESS BOOSTER SEAT CUSHION Designed to provide 5" full inches of added height, this extra firm cushion won't compress or collapse like other, overly soft and mushy cushions, not even after years of daily use GET RELIEF FROM BACKACHE & PAIN WHILE SITTING: Medium soft supportive comfort & helps you to reduce pressure and strain on your hip, tailbone coccyx, corrects posture improves spine alignment also helps in pinched nerves or ortho sitting