Took a picture before the final zip up to show that there was actually room to spare in my backpack. I do travel very light, but with enough items to suit pretty much any occasion on a trip. I also like to leave a little room in case I have any last minute additions.
As a final note, I try to pack a few clothes items that I will not miss if I throw them away at the end of a trip. This way, I create room in my carry on luggage for souvenirs.

