Messenger bags are great, but with two straps to distribute the load, a backpack is often a more comfortable option for longer rides or heavier loads. Unfortunately your options have either been student backpacks that leak like a sieve, sit up too high, or cost a fortune. We designed our backpack with a full welded waterproof liner that is removable and replaceable if it is punctured. Features quick access side pocket that fits mini u lock, angled tab for safety light so that light faces back while riding, large reflective stripes, and shoulder strap mounted cell phone holder.