Memory Foam Seat Cushion with Non Slip Base Orthopaedic Premium Ergonomic Lumbar Support Design - Improves Posture and Relieves Coccyx, Lower Back, Spine, Sciatica, Tailbone Injury, Pelvic, Hemorrhoids, Pregnancy Pain - Comfortable - Medical and Professional Use - Ideal for wheelchair users, Office workers, Taxi, Bus and Lorry Drivers - Comes with FREE bag making this portable for travel