"What can the Lower Modular Pocket be used for? Like a little Sherpa on your back, it can be leveraged to carry loose items that you don’t want to root around for to access in the main compartment of the Smart Alec. Things that you take in and out of your pack often. For me, in the winter, that would include items like my hat, gloves, chapstick, and sunscreen.
I’ve also used the Lower Pocket with my Source Tactical Kangaroo Collapsible Canteen. Source is an Israeli company that makes excellent hydration systems used by military units around the world. The Kangaroo has a 1 Liter capacity and is an excellent alternative when you don’t want or need to haul a full sized reservoir."