The Elk Hunter's size and profile is somewhat misleading. It has one large compartment (top load w/zippered "hatch" that can be filled from the bottom up with as little or as much gear as you care to stuff. IOW, the size of the pack is determined by what you place in it. Over this compartment is a cover/flap that has another compartment for smaller items. The main compartment has a pocket for a hydro bag. The lower part of the pack has three outside pockets, 1 fairly large and 2 smaller ones. I have never worn a pack with so much potential capacity that feels so light even when "test loaded". The pack's profile is narrow, so slipping through the branches is NO problem, plus I can wear a side quiver (like the Simmons Bushmaster) with mine without interference. I'll try to attached a picture later of one loaded that Mikie Mitten sent me.