It is a Cannodale Trail 6 bike. The frame is painted black with a piece of text saying "Trail 6". The ''6'' is highlighted by a red square. The frame also has a big 20 written on it. "Nine line 29'' is written on the tires. The bike was slightly dirty when it was stolen, but not enough to make it indistinguishable from stock pictures. It has two lights mounted on the front and on the rear. The rear light is a bit floppy, as it is not secured by any rubber bands. The frame also has an XL written on the rear bar.
Unfortunately I do not have any pictures of my bike which can be used here, so I will have to use a stock picture instead so you could get an idea of how it looks like. In addition, I have also uploaded a picture of the bike model which I found on google images. The picture was not taken by me, and that is not my bike, however, it is the same model and bears the exact same appearance as mine does. I hope you will find it helpful. I have bought the bike on the 5th of November 2015, from Cykler & Fritid in Randers, Denmark, and thus it has a small sticker glued to the lower frame, right next to the discs. Cykler & Fritid is written with white color on a black background.