It did not take long that I sleep with this mask to see if already off the superimposed layers (always helpful to convince us to throw) which are also completely useless since the day sees between the fibers anyway. In addition they shoot the overriding criterion, comfort! With my little head I find that with the same elastic resolved as loose as possible hugs me too, solution? a glimpse of many of Velcro, but the hair is then in contact with it and when you want to remove it after the thin ah nap, my long hair to take it (I got hard to get them out of there and I today continues to struggle after each naps). This same elastic too short gene comfort and adaptability and windy, the mask is not at all rigid it is deformed and it becomes almost impossible to open your eyes in, also by this deformation effect we can see day that slides smoothly in the nose. Clearly it is more annoying than useful. They should specify that this is a disposable mask, just like the famous BIC razors