BONNFORM BONNFORM Seat Cushion Phiten Lumbar Support 38 x 18cm Neck Pillow 26 x 18cm Seat Cushion 44 x 44cm Black, uses Aqua Titanium, Low Resilience, Support Cushion, Lumbar Hold Type, for Lower Back Pain and Fatigue Relief, phiten 5815 I used it briefly after purchase to try it out, but it didn't suit me, so I'm selling it. It's in good condition. Please consider purchasing if you understand that it is a used item.