This thing is a tank. I'm glad i got the medium because it is HUGE, the large was only $10 more but shit it must be gigantic if this is the medium. The build quality is awesome and the internal dividers are also much much nicer than my old tamron bag. The zippers have this really slick rubber seal on them to keep out moisture. Here are a few pics (ignore unfolded laundry on the couch ) Loaded up with 2 bodies, 6 lenses and an SB800. there are some spare dividers i took out too. the whole divider compartment comes out too if you want to use it as a regular backpack. Not sure what this is for, but there are two of them. Filter or memory cards maybe? Side access to lenses so you can grab one without taking it off your back. one on each side. Weather sealed zippers. These are really slick. Cover for the shoulder straps. oh, and i has a grip now too I highly recommend this bag, it wasn't cheap, but i think it's worth the money. It has a laptop compartment too for up to a 17".