Like most people, I've had the habit since I was young of wearing only one of the straps on a regular backpack when I need one. The Eastsport Athletic Sling Trapezoid is an awesome invention that only has the one padded strap so it's perfect for someone who only uses one anyway. The backpack itself is very lightweight and has many pockets. One of the coolest features is an mp3 trap for storing your mp3 player. You just feed the cord through the opening in the bag and you can listen to your music while you walk or bike. There is a bungee cord mesh on the outside of the front pocket that can be used to hold a jacket or sweater. I don't use the cell phone pocket or the detachable keychain holder, but they're available on the bag. There are smaller zipper compartments and the one main compartment for storing items. It's not tiny, but it's not too large. It's a perfect bag for storing a few notebooks, but nothing much bigger than that. If you're looking for a decent sized bag for carrying paperwork and maybe your mp3 player, I'd highly recommend the Eastsport Athletic Sling Trapezoid backpack.