The metal parts don't fit snug into to plastic part at the bottom so it makes it kind of wobbly, especially because the two metal parts aren't connected in any way except for the plastic piece holding it. The rubber on it is nice quality, and even with the grips there and the plastic tabs keeping it from slipping of, i would like some more stability so I think I'm going to return it. I don't like that i can't put pressure on it without it wobbling either..
hopefully they will accept the return because just from inserting the metal sides into the plastic scratches the inside of it, every time you take it out or insert it the metal sides completely scratch the plastic. I liked the thought of the ease of portability, but not if its going to scratch it up.
I don't normally do reviews, but I want to warn anyone that your expensive macbook pro has a danger of sliding right off the elevator. The two slats your computer rests on is at an angle. In certain conditions (too humid, too cold, too hot - haven't figured it out yet) your computer may slide off and in my case land on the floor and get damaged.
Just a warning for anyone interested. I have no clue why they are at an angle anyway.