Lumbar Support Cushion, Chair, Back Cushion, Low Rebound, Office, Telework

This is a lumbar support cushion for a chair, purchased from 3COINS. It comes with straps to attach it to your chair.
I used it a few times, but it didn't suit my lower back, so I'm selling it.

There is a stain from when I dropped a ballpoint pen. Please check the photos.