Reviewed by Kay - 19th Jun, 2019does the jobWe got this for my mum as she wanted to be comfortable. She suffers from all sorts of aches and pains and worried that she wouldn't be comfortable but she was happy with it for the four nights we used it for camping. This is coming from the woman who hates spending a night away from her bed so that is saying something. She said long term she would probably prefer something thicker but I think that's because she wants it to be as close as possible in comfort to her mattress at home! otherwise I think it was a great buy! To self-inflate, it's the case of switching a cap. Very simple!