As I sit here doing my pre-commute procedures (drink coffee, shower, dress, drink coffee, eat breakfast, drink coffee, make lunch, make coffee to carry to school), I gotta take a second to rave about a new piece of equipment that has made my bike commuting life unimaginably better. The new Breezer Biz Pannier is so much awesome in a bag that it defies attempts at accolades.
It comes with a great, easy to install mounting system for your rear rack, has plenty of cargo space and best of all: it doesn't look like you are carrying a pannier around at work. It is designed with the bike commuting professional in mind and is styled like a soft briefcase, not as a messenger bag. A handy thing when you are trying to break your addiction to wearing girl jeans and you like riding bikes with brakes AND gears. I have only used it for a couple of days and I can't figure out how I ever did without it.
It is lightweight, but has a solid and sturdy feel and the construction is very bomber. The oversized hooks on the mounting sheet easily fit the large diameter tubing on the built in rack of my Globe Haul, something that defied my use of Jannd Mountain panniers until I fabricated my own mounting hooks. The attachment system is well thought out and the load bearing straps that hold the pannier in place make even the heaviest bag stable and securely mounted.
The one downside is the zipper attachments to the mounting sheet that stays on the rack. The zippers are small and a little tricky to line up, especially with cold hands or in dark conditions. Larger zippers would eliminate this issue and would be an easy improvement. The only other suggestion for improvement would be to pad the laptop compartment and give it a softer fabric lining. Beyond those two suggestions, I see no need for improvements.
If you wear a jacket and tie, or whatever female equivalent is appropriate, while riding a bike to work, this is definitely a must have.