It is exactly as advertised - a shell. Call me naive, undiscerning, a dreamer but I was hoping for something more. Don't get me wrong - it appears to be a quality pack but without buying the approx. $200 in "optional" add-ons, it is literally just a shell. If that is what you are looking for, great! But, if you are like me, and are looking for a well-made travel backpack, and all of the assumptions that go along with it, then perhaps, just the shell is not the bag for you. It offers limited additional storage other than the in-back laptop storage and zip pocket. Which, if you are going to buy their other accessories, you can upgrade the bag to your liking. If not, you are left with what is essentially a $250 hollow cavern with zippers on both sides. Again, I'm not bashing the quality but perhaps looking for a bit more in terms of value for cost. Otherwise, they should call it as it as. Sell the backpack with all of the upgrades to make it a fully-functional bag and market it at the true price point - $450+.