blocks the majority of the light to help you sleep [SEP] i sleep better when i wear a sleep mask so i use them regularly when i was looking for a new one to replace my worn out one i was given the opportunity to purchase this one at a discounted price so i could try it out this is a nice light weight sleeping mask i have had one mask before that was super thick padded but it was actually more difficult to sleep with thicker is not always better one side is satin and the side that is against your eyes is a soft velour type fabric the straps are a nice thick elastic band which is adjustable with velcro i have purchased many sleeping masks which have a thin elastic band that is not adjustable at all those eventually get stretched out before the rest of the mask is worn out this mask does a pretty good job of blocking the majority of the light a little light can get through the area of the mask around the nose i do not use ear plugs very often but it is nice to have them handy when i do need them so i do not have to fumble around my night stand looking for them