This is certainly better than those free masks you get on aeroplanes and is much more comfortable. It allows room for your eyes to breath by not restricting movement of your eyelids and lashes - great for R.E.M. sleep! Unfortunately it has two problems: 1) it's a little bulky and consequently heavier to wear which may cause some distraction, 2) the excess padding, particularly around the eyes means that when you rest your head sideways on a pillow the mask is pushed away from your face slightly. This stops it from blocking out all the light and adds pressure to your temples.