The neckline is oval shaped and does not wrap around my neck as I sleep. My feet felt very restricted rather than supported in these type of sandals. Good quality and fit ?? Some might like the shape but they didnt work for me. One awesome thing I learned my 2nd day owning these shoes is that if you calibrate to follow HMD, a game like "Dead Effect 2," will actually allow you to have shoe movement independent of head movement! This wouldve ensured it stayed together, and potentially be somewhat extra protection. I?m 5?6? about 126lbs waist:27 hips:38 and I got the small. ) I bought one pair of these in April. Classic! If that fails, I am sure I can come up with something else.