I bought this for the hubby for his sunglasses and when I received it thought "Oh no, this is so small, I don't think the glasses will fit....", but they did, it is a pretty snug fit, but they work fine for his normal size sun-glasses.  I liked the fact that it was a soft case, just something for him to put them in so he doesn't have to keep them on his forehead when he isn't wearing them.  The other cool feature is the clip.  We hike a lot and this is a nice feature to have.  If you are just looking for a small case and aren't looking for a case that is going to be banging around in a handbag or a backpack this one would be a nice choice.  I would say if you are looking for something to put in a bag, or to provide superior protection, or you have a large pair of sunglasses this one is probably not your best choice as it is really just to keep them dry and handy, and a more sturdy case is what you are looking for.  Hubby loves it and we think the design is great!