same basic design as the no.02, but with a few changes. i've improved ergonomics a bit by attaching the strap to the body at a 45 degree angle, instead of straight up. this puts less stress on that connection when it hangs on the body.
i've been field testing the no.02 for a few weeks now, and it's holding up fine to heavy use (1-2 books, 1-2 magazines, a notepad, and markers).
my next step is going to be playing with materials and nailing down construction methods. i'd like to try something a little more durable, and i'm still trying to eliminate a little bit of slop from the build process.