I have tried various masks to aid sleep. This was the most expensive, but I would have been happy if satisfied. This one was the worst, in that the "nose" gusset went right along the bottom, resulting in blackout when first positioned, but ... within a short time, because of the position of the band, slid upward, and ended up pressing on my bottom eyelids!!! Frustrating. Repositioned, to have the fastener lump in the back of my head, so no lying on it [even with a visco-foam pillow]. Had more success turning it upside down, or inside out!!! Then, as I have since read elsewhere, HOT HOT HOT... unbearable, so had to try lining it with a cotton hanky. So, you can tell I tried... and tried and tried. Additionally the fabric collects every bit of bedlinen fluff going, so looked rubbish after just one wearing.
I am now about to try the new generation with the moulded shape to allow the eyes to blink.It is cotton lined.[not from Amazon - sorry!]
In the meantime, the best otherwise was the original Petworth shade, similar to the now Mack Shut-eye shade, which has a gusset for the nose only, brilliant black out, with adjustable tiny buckles on the two bands. I have worn out several over the years.
Hope this helps, but it is no reflection on the seller, only the brand!