I am happy with the size, I am not happy with the stitching. I had to get it restitched, and had it doubled up. I have had no problems with the zippers and consider them rather robust.
There are four pockets to it. There are two smaller pockets on the outside. There is molle strapping along the front of both pockets.
The middle pocket, between the main and the smaller two, runs most of the length of the bag.
The main pocket opens wide. The zippers run pretty much the whole length of the bag letting it be opened and laid out. There is a mesh catch pocket inside.
Against your back, just under the straps is another padded pouch.
Double mag pouches fit along the molle on the main compartment on either side.
I am very happy with the bag. Some people might have problems with the stitching like I have but its only been people who are rougher with gear. Price versus durability and use so it is definitely worth the money.