Got this to use for the motorbike but also general hiking and camping. It's waterproof, comfortable, carries a good amount of gear. Good product from Oxford at a good price. - Amazing value for money, feels as good as bags that cost twice the price.
If your a commuter wether its bycicle, motorbike or really anything this is the ultimate fully waterproof bag. It's plenty big enough and reflective for them dark times, like i said the perfect commuter bag, good price and excellent quality, highly recommended.
Opened the bag up and then closed it inflated with air inside. Had to open it up again to get the air out so it would flatten down. If it keeps air in when squeezed it must be pretty watertight.