Donut style Memory Foam Orthopedic Non Slip Seat Cushion by LiBa. For Home, Office, Car, Stadium, Wheelchair. Pain Relief. Sciatica, Low Back, Tailbone, Coccyx, or Hemorrhoid Relief. Zippered anti-bacterial mesh seat cushion removes for cleaning. Excellent shape. Only used for a few months. No longer need. Will sell for half of purchase price. $10.