Manta sleep masks

I have collected three or four of these sleep masks (the original, the silk one, the linked, souped-up one). They are scattered around different places I frequent and they are now synonymous with sleep to me. I suck at sleeping and I always have but I've managed to Pavlov's dog myself into it with these: I slide one over my eyes and it blocks out every iota of light and my stubborn brain accepts its fate and off I go. Other masks never did it for me and it's possible I'm now dependent but whatever, man. I'll take that deal. I keep this mf thang on me. Good night!