This eye mask might only be purchased for a collection to fulfill but I actually use masks like this. Honestly I was worried the light color might not meet standards and wouldn't provide the darkness I need to sleep but not only it is light and smooth but it also blocks out the unwanted light. The bag it comes with keeps it from sitting out and making my worry about collecting cat and dog hair from my pets. The silky material is nice against sensitive skin and it serves its purpose effectively. Unfortunately when I use it I don't want to wake up at 5am like the Gusu clan suggests, I'd much rather keep sleeping in the darkness it provides.