A straddled vehicle comprising: an engine including a cylinder (16, 17) and a piston housed in the cylinder (16, 17), a cooling device disposed in front of the engine and including a core that includes a plurality of tubes through which liquid flows and a fin that is disposed between the plurality of tubes and that is configured to receive travel wind generated when the straddled vehicle travels, the cooling device being configured to cool liquid flowing inside the plurality of tubes by travel wind, a hose (43, 44) configured to guide liquid between the engine and the cooling device, and an outer air guide configured to overlap with both the engine and the cooling device in a side view of the straddled vehicle and including an inner surface disposed outward of the cooling device in a width direction of the straddled vehicle and an outer surface disposed outward of the inner surface in the width direction of the straddled vehicle, the outer air guide being configured to guide travel wind rearward by the outer surface, wherein a portion of the cylinder (16, 17) is visible in a side view of the straddled vehicle, the outer air guide includes a side wall portion that overlaps with both the engine and the cooling device in a side view of the straddled vehicle, and a rear wall portion that extends inward in the width direction of the straddled vehicle from a rear edge portion of the side wall portion corresponding to a rear edge portion of the outer air guide, characterized in that the horizontal cross-section of the outer surface of the outer air guide includes a protruding portion that protrudes outward in the vehicle width direction from the rear edge portion of the side wall portion which includes a burble point where travel wind flowing on the outer surface of the outer air guide impacts with the protruding portion and separates rearward from the outer surface of the outer air guide, the burble point is located at the protruding portion on the rear edge portion of the outer air guide so as to cause travel wind flowing rearward on the outer surface of the outer air guide to move away from the outer air guide at the burble point and to flow rearward from the burble point 71, disposed at a location further rearward than a front end of the engine and further forward than a rear end of the engine, and disposed further outward than the engine in the width direction of the straddled vehicle, and a tangent line of the horizontal cross-section of the outer surface of the outer air guide at the burble point is parallel to a front-rear direction of the straddled vehicle or obliquely inclined with respect to the front-rear direction of the straddled vehicle such that it moves away from a center of the straddled vehicle in the width direction of the straddled vehicle as it moves away rearward from the burble point. an engine including a cylinder (16, 17) and a piston housed in the cylinder (16, 17), a cooling device disposed in front of the engine and including a core that includes a plurality of tubes through which liquid flows and a fin that is disposed between the plurality of tubes and that is configured to receive travel wind generated when the straddled vehicle travels, the cooling device being configured to cool liquid flowing inside the plurality of tubes by travel wind, a hose (43, 44) configured to guide liquid between the engine and the cooling device, and an outer air guide configured to overlap with both the engine and the cooling device in a side view of the straddled vehicle and including an inner surface disposed outward of the cooling device in a width direction of the straddled vehicle and an outer surface disposed outward of the inner surface in the width direction of the straddled vehicle, the outer air guide being configured to guide travel wind rearward by the outer surface, wherein a portion of the cylinder (16, 17) is visible in a side view of the straddled vehicle, the outer air guide includes a side wall portion that overlaps with both the engine and the cooling device in a side view of the straddled vehicle, and a rear wall portion that extends inward in the width direction of the straddled vehicle from a rear edge portion of the side wall portion corresponding to a rear edge portion of the outer air guide, characterized in that the horizontal cross-section of the outer surface of the outer air guide includes a protruding portion that protrudes outward in the vehicle width direction from the rear edge portion of the side wall portion which includes a burble point where travel wind flowing on the outer surface of the outer air guide impacts with the protruding portion and separates rearward from the outer surface of the outer air guide, the burble point is located at the protruding portion on the rear edge portion of the outer air guide so as to cause travel wind flowing rearward on the outer surface of the outer air guide to move away from the outer air guide at the burble point and to flow rearward from the burble point 71, disposed at a location further rearward than a front end of the engine and further forward than a rear end of the engine, and disposed further outward than the engine in the width direction of the straddled vehicle, and a tangent line of the horizontal cross-section of the outer surface of the outer air guide at the burble point is parallel to a front-rear direction of the straddled vehicle or obliquely inclined with respect to the front-rear direction of the straddled vehicle such that it moves away from a center of the straddled vehicle in the width direction of the straddled vehicle as it moves away rearward from the burble point.