Shopped around for ages and ordered this mattress specifically because it said "reinforced edges". How wrong was I! This mattress is awful. You have to sleep dead in the middle unless you want to be rolling off the sagging unsupportive edges all night, ok for a single person but not for a couple. This awful mattress made an already-uncomfortable summer pregnancy a very painful and sleepless experience, until we switched back to our old mattress. Basically a couple hundred quid in the bin.