I did this mask all in one night after returning from San Francisco. I needed something small, something that I could just crank out BOOM like that. I needed to make it a bit longer than the pattern specified in its row count to get it to be a comfortable fit. I’ve been sleeping with it practically every night since I made it, and the cotton is breathable, soft, and somehow soothing. It does let light through a little but not enough to bug me.