The sleeve is very snug. The material is a pretty thick feeling to it so I feel safe having it in it. I hadn't taken the plastic protector off the top of the chromebook until this arrived. Here are some images to give a better idea of how snug it is, The chromebook does not stick out at all but you can see it while it is inside the case.
I love my chromebook, I have other pcs so this has mainly turned into a web laptop for me but I'm able to accomplish everything that I would do normally on a pc besides gaming and web development stuff. I'm still playing with apps for web stuff though.