The build quality is top, only in a few places on the side dominates the lining hem something about it out - do not bother.
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Nevertheless me 2 things are noticed which might be important for potential buyers:
1. The material is felt a little soft / thin and more cloth-like. Since the velcro is quite small and mounted centrally bulge in a closed state, the sides of the locking tab slightly upwards, it works by some limp and not dimensionally stable and solid. Especially if you put the sleeve in another case, just the pages remain the plug like to hang and you have to fold it back by hand. Here would be a wider Velcro or two - certainly ever been a right and left a good idea.
I have to compare my iPad a felt cover of Almwild which is much more rigid and stable. (But it cost twice as much compared well for much less material)
2. When Retina Macbook Pro 15 "could be the counterpart stated below from the Velcro loose 2-3cm - pushes to the Macbook in the envelope and proposes the door to intuitively determine the Velcro counterpart is not hit one ends up just below. therefore must be closed a bit back to the velcro again. So the whole sleeve is not as firm and to the device nestled how the would wish. The advantage of felt here is that the Velcro is also liable in the felt, albeit long . not as strong Thus, the problem is almost solved - but it would be nice if you would land exactly intuitive when closing the tab on the Velcro contrary.
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However, the two points mentioned are complaining on a high level! The shell is unbeatable and absolutely worth the money especially for that price - if not more (I would ask for more than manufacturers :-P)
That is why there are also 5 star and a strong buy recommendation. Inateck has already convinced me with other products, good and cheap is in the accessories market has become rather rare.
Another note on the supplied mouse / power supply pocket: The Magsafe2 PSU fits in completely, but only with the plug adapter. The long thicker power cord has no place in there (which is no problem at all)
+++ UPDATE after two weeks usage +++
For me listed above point 2, to fit but now I want to add something. I noticed so that the Velcro its counterpart does not apply if you "firmly turns the sleeve when rMBP 15 and closes, but that the No worries because the felt holding the velcro as well. Unfortunately, the Velcro makes up the felt broken, or fraying him . I have made so now but resorted to sewing kit and about 2cm further placed the Velcro counterpart down. This is a bit fiddly but done quickly eg with a sewing machine. Now the Velcro fits perfectly. As I have read in some new reviews This problem is also noticed other. Perhaps yes here the manufacturer to improve fit.