Are you looking for a bicycle bag or a backpack? The Vaude Cycle 22 is both and therefore a handy bag for when you regularly cycle to school or work. You attach the bag to your luggage carrier with a single action. And with the same ease you take it off again. If you use the bag as a backpack, unzip the fastening system and store it in the appropriate compartment in the backpack. The Vaude Cycle is splash proof and comes with a rain cover. So you do not have to worry about a shower.