The Tenzing 2220 is one of our favorite day packs within their line. It is a very good system with good entry to the main compartment. Like with all the rest of the Tenzing packs, they've color-coded the zippers, both the t's and the poles. These are non-noise-making poles. Keep in mind that the yellow ones are always what get into the main compartment. One of the things I like about theirs is that the whole thing will open up and give you access to the entire pack. The other thing is the smaller compartment in the back has all the individualized pouches to separate things like calls and scent control. All those different things that we want to compartmentalize within our system as well. It has very good compression capabilities on the back with two individual compartments, a bigger one and a smaller one on each side of the system. It also has a large expandable pocket here that'll hold things like tripods and/or spotting scopes. The other nice thing is they make kind of a little sleeper pocket back here that holds a long narrow thing, so maps would go nicely here even some of your mountain house things that you might need quick supplies that are longer and more vertical. So, I like that design on that pocket as well. A nice thing is on a smaller day pack system, you still have the ability to carry some of the bigger things that you're going to be in the field with. It has a full internal aluminum frame as well as a hydration system that'll hold up to two liters. Now, on the front suspension system and the shoulder harness, we do have vertical adjustments like you would on any good pack, a good center strap system...