Out of my car and on my bike.
I needed a bag that I could pack full of bulky things such as my coat, my violin, groceries, packages to mail, etc. This bag is exactly what I hoped it would be: lightweight, and high on volume rather than little compartments. Its got two side pouches that are enough for me for extras like a water bottle, keys, whatever. I like the fact that it is the size of large everyday backpack but can be expanded into twice that size. It doesn't obstruct my view while biking and its really comfortable. I'm short (4'11") and it fits my torso really well. Its pricey and I'm still paying it off but I'm glad I took the plunge. I'm out of my car and on my bike everyday now thanks to my new bag.