I purchased this because I use a CPAP machine and the head bands were causing my hair to break. This cap does the trick by buffering contact between my hair and the head gear bands with an added bonus of a good fit. There is a 2-3 inch section at the back of the cap that is gathered with elastic allowing a more customized fit and the lace detail is a nice touch. I did not find that it made my head 'hot'. In fact it added a bonus as I can now loosely roll my hair or use a sock bun (see you tube for more about the bun) and can keep all my hair under the cap for a better style the next day. I have also deep conditioned/oiled my hair then put on the cap overnight without having to worry about any hair product getting on my pillows. My only regret is not buying something like this years ago as it really has turned into a versatile product to protect my long hair.