To provide a pump of easy pumping to supply air to a two-wheeled vehicle and the like.

As an outer cylinder of the pump is inclined inward toward a user at an angle less than 90 degrees with respect to the ground surface while keeping a grounding state, the pressing force hardly escapes when pressing a handle, the force is effectively applied in the pressing direction, the body weight can be easily applied to the handle as a power point, and further the body weight can be applied while pushing out the hip, whereby the load to the hip can be reduced, and the pumping can be easily performed.