I have purchased a new Hello Kitty backpack for myself almost every year; I'm always looking for something that's cute but not too cute for someone as old as I am (over 50). This is a lovely backpack. The shiny black vinyl looks cool and repels rain. It doesn't scream pink/cutesy/juvenile, as many HK items (understandably) do.
It sits comfortably on my shoulders and has nice padded straps. It is structured and doesn't collapse when it's empty.
It's just about perfect for me.