This is one of those products which is so simple yet effective you wonder why didn't anyone think of it sooner! Originally called Baa-Baa Blackout Blind, the Gro company (the geniuses who brought us baby sleeping bags) have bought the rights and made a few improvements too. The blind is supplied in it's own travel bag, and ready to use straight away as the suckers are already attached. Each side is adjustable to fit (using elasticated waistband thingys you sometimes get on kids trousers). You just press the suckers onto the glass, adjust the edges a bit and... instant darkness! (or pretty damn close) We took this on holiday with us and it worked a treat. Never again do we have to precariously hang blankets or towels over the window. Or endure kids waking up at 5am due to the light streaming in to their rooms! Not just for hols though, we use for sleepovers at granny's and now even at home. Worth every penny. If you want an easier bedtime, and an extra hour or two in bed in the morning (who doesn't?), buy one!