Very good, but a bit cramped for the power supply ...

The Surface Pro 3 with infected Type Cover and plugged pin (inserted in the tab on the Type Cover) fits perfectly in the pocket. The pin is easily pushed to the side of the tablet. I have not the slightest concern that it might harm the adhesive tab. The tablet is well padded. So you can pack in a backpack it safely eg.
Why do I deduct a point:
The zipper pocket on the front is unfortunately a bit arg closely. The power supply fits in, but only with difficulty. This is fiddly, and the cable from the power supply is thus also charged something in pure stoppers. Also, a tab for the pen can be found in the compartment. However, one must always look for it, where the tab is, and as I said, you can also pin the same can be plugged into the Type Cover.

Pro:
- Protects your tablet from bumps and scratches well
- Protects the tablet from moisture
- Fits perfectly to the tablet along with keyboard and pen
- Pin can remain plugged into the Type Cover
- Front pocket is suitable for small accessories such as USB sticks. Also, the pin could be inserted into a flap here

Con:
- The front pocket is very tight. The power supply goes in, but difficult. Therefore a point deduction.

I personally come to the surface freshly charged through my work. Thus, I do not have to bring the AC adapter. Nevertheless, it would be nice if it would better suit a bit in the pocket.

For people who do not have to have this case, the power supply always: Unrestricted buy recommendation.
Who the power supply always want to have while trying.

Greetings
Alex