Think your mum was just being polite I'm afraid. I have scored this 1 simply because yes it is light weight easy to store and comfortable to lay on your back on but laying face down?? It doesn't lay flat so you are bent upwards and whose head is that fat. The hole is way to big and your head just drops through. It takes a lot of balancing and messing about with the cushion which can not be fixed to the velcro if you want it even remotely comfortable. My husband is customising it as I write this, so it will lay flat.  Great idea but needs a serious rethink.I had used it to sit on and got hot so that is only reason I have not returned it.