Well, I was a bit worried that this wasn't going to be worth the money - but it is fantastic! Incredibly easy to put up and a generous amount of velcro tape provided (you could do round the whole window frame if you wanted - I just did the corners and the middle of the edges). You don't really notice the white velcro tape against the white pvc. But the best thing about it is the material itself. The whole of the back is made of the 'soft' side of velcro, but integrated into the material - it isn't two pieces glued together (i.e. the blackout material glued onto the velcro part). So it is very simple to put up each night and take down the following morning and will probably last until my little one leaves home. And it makes the room DARK, very, very dark. If you or your child wake up because of sunlight streaming into your room, then I recommend you buy this - it's definitely money well spent.