Please see my prior notes on Talon and Sirrus! I finally landed on this bag and must have told my husband over 20 times on our trip "Have I told you how much I love this bag!?!?!?" I was looking for a lightweight, good-fitting bag with lots of storage options for carry on to planes, trains and ferries while traveling to Italy. I also wanted the bag to serve as a quality day pack for hiking and exploring. I didn't want a stuff sack but wanted to access the storage via zippers. What I love about this bag is the versatile storage options and massive amount of storage without the weight. If considering this bag, research all the pockets--one across the tip top for little things-keys, kleenex (things you aren't worried about getting stolen), a small cell phone pocket on the front of one of the straps (LOVED!!!!), a divider in the main pocket so you could keep wet or less important things on the bottom, a teeny slim pocket across the very bottom (generally holds the rain cover but I didn't take it) and several internal pockets. And all this with adjustable hip, shoulder and chest straps. I seriously cannot say enough things about this bag. My only two wishes...more color options and elongating the hip pockets that run across the sides so they are easier to access.