I've used the bike for the past year as my sole commuting bag. I've worn it on buses, light rail, and ferry and have enjoyed the pack. When not overstuffed, it has a slim profile good for confined spaces. I love the zippered pocket on the side and the water bottle pouch is sufficient for a 32 ounce bottle. My only complaint is that the mesh on the back panel is worn out and tearing (see pictures). Other than that one problem area, the pack looks like new.