To provide a motorcycle enabling the arbitrary setting of a seat width by solving a problem wherein restriction is applied to the sheet width, and to reduce a weight of a vehicle body by solving a problem wherein the weight of the vehicle body is increased.

In this motorcycle 10 formed so that a helmet 49 can be stored in the lower part of a seat 23, a center frame 44 at the lower part of the seat 23 is formed in a frame having an opening of an annular shape in side view, an engine 16 is disposed on the underside of the center frame 44 so that the helmet 49 can be stored from the side of the openings 47 and 47, and the openings 47 and 47 are reopenably covered by right and left side covers 76 and 75.