The Comp II is a light, well fitting helmet that's a tremendous bang for the buck. Compared to similarly priced Bells, Giros and Specializeds, this thing is not only the lightest, it is the most comfortable. Comparatively to the Giro Remedy S, this not only fits truer to size, it is far more comfortable. Additionally, it is a much smaller sized helmet than the Remedy S. To say it a different way, it won't make you look like a tennis ball on a toothpick.
The peripheral viewing is excellent with no peripheral obstruction. The same goes for the mouth piece.
As stated, the liner is removable. To do so; begin on either side of the jawbone and unsnap the soft liner, working back towards the interior of the helmet. There are two snaps where the strap is riveted to the shell. The rest of the liner is attached at the forehead.
Venting is also quite good, though the vents on the top and rear are more obstructed by the soft foam liner. If you really want this thing to really breathe, cut out holes in the soft liner.
The only drawback I've found thus far is that the matte paint on the gray version is quite thin and chipped very easily.
If you happen to wear sunglasses, straight stemmed ones fit great, don't move around and are held in place quite well.
Lastly, the chin strap is a double D-ring set up with a snap to secure the end of the strap. If you're familiar with most top tier motorcycle helmets (Arai, etc.), it is the same set up.
Overall, if you're looking for a great fitting, lightweight helmet to break into free riding or downhilling, this is an excellent choice. The price also helps significantly.