We were looking for a black out blind to fit an awkward lantern/dome style skylight, wasn't even sure it was possible. We have converted a room into play room and nap room for our new baby but the skylight was not only heating the room up dramatically but was not helping our baby understand that dark times are for sleep and light times for play. All 4 sides of the port are not equal so I was very worried about spending the money based on my measurements but with the handy videos and help directly from Naomi I felt very confident. The blind has arrived and the fitting was so easy, it is not as snug as some other peoples i'm sure but that is because our dimensions aren't square. None the less thank you and a fantastic service.