Has anyone used a Cozy bump?

[CrossFreelancer]

I've seen this pregnancy 'mattress' called Cozy bump. It has a little hole in the middle to allow pregnant women to lie on their tummy's.

www.amazon.com/Cozy-Bump-Maternity-Pillow-Pregnancy/dp/B01FASX1WK

Has anyone bought one? I'd like to hear good/bad feedback. Is it worth the price and customs fees (£100 ish)

I'm getting a bad back and want to try anything!
Does anyone know of a website/place i can buy one in the UK?

I'd be happy with a second hand one, but none for sale on ebay.

Ynot used it, but it looks like its an inflatable mattress- those are great for the first hour or so until it gradually starts losing air and suddenly you wake up at 4am sunk really far into it!

I don't think I would actually sleep on it as such. I was thinking about just napping or chilling on it when I get 5 mins to 're-set' my back