Are those bags waterproof?
I'm currently running a set of them, and I'm pretty sure they're not, at all.
I would describe them as a very nice 'messenger bag' that's been cleverly adapted to fit on a motorcycle.
But they're not nearly as rugged or moto-focused as typical moto gear.
I'm not really impressed by the only secure attachment method being locking them on with the key.
I'd rather have a snap latch with optional locking.
On my first few rides with them, I noticed a couple issues.
The latch on the flap is not very secure, occasionally it would release and allow the flap to whip rather violently in the windblast (I regularly ride freeway).
Additionally, the leading edge of the flap was rapidly forming a crease along the line I've drawn in the photo.
Caused by the windblast getting under the leading edge of the flap.
To combat both issues, I've fitted a 5/8" ROK strap from front to back on the external rings (rings that are for a shoulder strap I assume).
Also, the handle being attached only to the flap puts a lot of stress on the latch, which is basically only rugged enough to hold the flap down in near-static conditions.
To repeat, a very nice 'messenger bag'.