Special bicycle bags are quite important for the safe transport of any kind of baggage on a bicycle. These bags are often made of waterproof materials in order to keep the contents dry and safe. There are bag systems in different sizes, colours, types and forms. Single bags can be fixed for example at the carrier or lowrider with a clicking mechanism. Small bags that are attached just below the saddle offer enough room for a small repair kit. Another variety is a bike bag, which is fixed at the handlebar at the front of the bicycle, or a basket for shopping.