My husband works midnight shifts in a coal mine so it is super important that he get enough sleep when he comes home before his next shift. Ya know for safety as it’s a dangerous job. This blind makes our bedroom completely dark and he is finally able to get enough sleep during the day. It is amazing! All the other room darkening blinds and curtains we have tried don’t actually make the room darker. This one does and it is my new holy grail window product for bedrooms!