This is a stock blue empeg bag. It's exactly as the OP describes. The empeg logo is in the lower left corner of the pocket. There's a handle at the top and on the right. The zip(per) on the pocket opens left to right.

If you pick the bag up by the handle on the right, with the pocket zip(per) slightly open, it will indeed let stuff out.

"Doctor, it hurts when I do this".