I have a herniated disk and regularly get lower back pain. As I’m an office worker, I wanted a cushion to support my back whilst working. This cushion appeared tiny when it arrived and I thought I’d made a mistake with the measurements. Once unpacked, it took a day or so for the cushion to fully ‘inflate’ back to normal size. The cushion is amazingly comfortable and provides great support. I’m actually pleasantly surprised at how much better my back feels when using it. The only downside is it smells like it’s been stored somewhere damp and mouldy. I’m hoping this will dissipate over time. If it wasn’t for this issue I’d have given it 5 stars.