Brilliant bag. It is waterproof. Plastic clips are thick and looks strong - so there is no worry that it will break. It is simple to remove it. Because of attached map compartment, your map will never get wet. And another good thing that it is removable. The bag is really specious - all necessary small things fit in there. One bad thing - pockets on both sides. They are useful but not protected from rain. All the stuff gets wet instantly. Overall this bag is worth having.