good stuff with a few limitations

I bought this for my Sleeve Surface RT with Type Cover. Since the bag is meant for the Surface Pro, which is a little thicker, the RT fits quite well as far into it and sits by not bomb-proof, but not so loose that it falls out. A (small) inside pocket is also there in the but not the power supply fits (which should be clear beforehand but in the picture;)), it fit with papers inside, maybe even a pen.
The material appears to be quite robust so far as, through the honeycomb structure, it is somewhat strengthened. By flap that closes the bag with Velcro, the tablet is protected from all sides. As the material behaves in the long term, has yet to be seen.

But two small criticisms are still there, which is why there is a star deduction:
Although the tablet fits comfortably in your pocket, it is somewhat tricky to get it in the first place because in (or later back out). This is due to the corners of the pocket opening. You see them on the product images set here. The opening of the pocket is a result of something "bigger" corners are not as wide as the bag itself. Thus, the tablet must be forced through a smaller opening than is actually necessary. That is probably prevent the tablet from accidentally falling out of his pocket, but this is unnecessary, in my opinion.
Since the bag is quite soft and thus not as stable as for example a leather bag, you pull the bag over the best tablet by the tablet first "threading" and then pulls out the tab. Then it's fast and uncomplicated. Pushing is possible only with difficulty, however.