A saddled vehicle with an airbag device the airbag device comprising; a retainer provided in front of a passenger seat; an inflator; an airbag accommodated in the retainer, the airbag being configured to be expanded by gas released by the inflator and deployed upward from an opening in an upper surface of the retainer; and a lid blocking the opening, wherein a cover covering the retainer from an outer side is provided below the lid, wherein the retainer includes an inflator accommodating portion accommodating the inflator, wherein the cover covers the inflator accommodating portion, wherein the lid is formed integrally with the cover, wherein the cover includes a ripping portion that is caused to rupture by the airbag being deployed, wherein the lid includes a lid-side ripping portion and a hinge portion that are caused to rupture by the airbag being deployed, wherein the ripping portions (115, 115a) and the hinge portion are a groove-shaped brittle portion formed to have a thin plate thickness as compared to the plate thickness of the lid and the cover at the part around the ripping portions (115, 115a) and the hinge portion, the ripping portions (115, 115a) are formed to have a thinner plate thickness than the plate thickness of the hinge portion and rupture with higher priority than the hinge portion, the lid and cover are deformed starting from the hinge portion, wherein a lower-side opening portion opened downward is provided in a lower surface of the cover, and the retainer is able to be accommodated in the cover from the lower-side opening portion, wherein the retainer is formed into an L shape including an upward/downward extending portion extending upward and downward and a sideward extending portion extending outward in a vehicle width direction from the upward/downward extending portion, the opening is provided in an upper surface of the upward/downward extending portion, and wherein the cover covers the inflator accommodating portion provided at the sideward extending portion. a retainer provided in front of a passenger seat; an inflator; an airbag accommodated in the retainer, the airbag being configured to be expanded by gas released by the inflator and deployed upward from an opening in an upper surface of the retainer; and a lid blocking the opening, wherein a cover covering the retainer from an outer side is provided below the lid, wherein the retainer includes an inflator accommodating portion accommodating the inflator, wherein the cover covers the inflator accommodating portion, wherein the lid is formed integrally with the cover, wherein the cover includes a ripping portion that is caused to rupture by the airbag being deployed, wherein the lid includes a lid-side ripping portion and a hinge portion that are caused to rupture by the airbag being deployed, wherein the ripping portions (115, 115a) and the hinge portion are a groove-shaped brittle portion formed to have a thin plate thickness as compared to the plate thickness of the lid and the cover at the part around the ripping portions (115, 115a) and the hinge portion, the ripping portions (115, 115a) are formed to have a thinner plate thickness than the plate thickness of the hinge portion and rupture with higher priority than the hinge portion, the lid and cover are deformed starting from the hinge portion, wherein a lower-side opening portion opened downward is provided in a lower surface of the cover, and the retainer is able to be accommodated in the cover from the lower-side opening portion, wherein the retainer is formed into an L shape including an upward/downward extending portion extending upward and downward and a sideward extending portion extending outward in a vehicle width direction from the upward/downward extending portion, the opening is provided in an upper surface of the upward/downward extending portion, and wherein the cover covers the inflator accommodating portion provided at the sideward extending portion.