I wrote a post recently about the 1L pouch not being quite enough. This is perfect in size, shape, and accessibility. The pouch on the front makes it super convenient to grab things I know I'll need in a pinch. The inside is roomy enough to fit all the things I mean to put in there, and some things I didn't realize I'd be carrying and don't want to.

I wear it under my jacket. It's obvious there is something under my jacket, but not totally obnoxious, especially if I wear it further behind me. I hardly notice it once it's on, and doesn't get in the way on the train.

Anyway, no complaints, only praise. I swear this is just a heads up, but I will say it the T-strap system is quite difficult the first time round. Good for peace of mind, but you really have to wrestle it out of the loop. Once you figure it out then it's not so bad. And you can wear it so many different ways. Anyway (for real), great job!