A bicycle which places the rider in a seated position, supine position or, exceeding rarely, prone position, and which may be covered in an aerodynamic fairing to achieve exact low waft drag, is referred to as a recumbent bicycle or human powered vehicle. On an upright bicycle, the rider's body creates about 75% of the total drag of the bicycle/rider combination.
Many cyclists carry tool kits. These may include a tire patch kit (which, in turn, may contain any combination of a tire pump or CO2 cartridges, tire levers, spare tubes, self-adhesive patches, or tube-patching material, an adhesive, a piece of sandpaper or a foil grater to clean off a section of the tube, and sometimes even a block of French chalk.), wrenches, hex keys, screwdrivers, and a order tool. There are also cycling specific multi-tools that amalgamate bountiful of these implements into a single compact device. Enhanced specialized bicycle components may call for more heterogeneous tools, including proprietary tools Bike Parts specific for a given manufacturer.
