In his pocket is room for my Pentax K7 with three lenses, the camera itself with flanged DA 55-300 Zoom fits. In the three side pockets is plenty of room for accessories. The equipment is (usually) quite well protected - if necessary provides the included rain cover for additional protection against rain.
However:. In my copy of the "lid" of the case does not fit properly on the rest As beautiful as it looks on the product picture, I do not get it back. The cover is just too small! One of the outer corners remains uncovered! This can of course get inside dirt. It remains to be seen over time, the extent to which the inner cover there still keeps what. I invite times high a picture to illustrate the problem.
Probably my bag is blended. Otherwise: Really very convenient, especially through the Klickfix system. The bag also has just the right size, I think. Nice that you get the pocket without the Klickfix mounting, if you already own as a holder (eg for a bicycle basket).