A vehicle with an inflatable knee airbag assembly being mounted at a bottom portion of an instrument panel of the vehicle, wherein the inflatable knee airbag assembly comprises: a housing; an inflatable knee airbag positioned within the housing, wherein the inflatable knee airbag comprises: a first inflatable chamber; and a second inflatable chamber fluidly coupled to the first inflatable chamber in a serial configuration, such that during inflatable knee airbag deployment, the second chamber is at least partially inflated before the first chamber; an inflator coupled to the airbag at the second chamber, wherein in the deployed configuration, the first chamber is located above the second chamber, wherein both, the first chamber and the second chamber each have a rear face (124, 144) pointing towards the instrument panel when the knee airbag is in the deployed configuration, wherein in the deployed configuration, an angle between a rear face of the first inflatable chamber and a rear face of the second inflatable chamber is greater than 90° and upon activation of the inflator, a portion of the inflatable knee airbag exits the housing in a downward direction toward a floorboard of the vehicle and wherein during deployment, the second chamber travels in a predominantly horizontal direction, relative to the floorboard, and wherein during deployment, the upper portion deploys in a direction that is at an angle with respect to the horizontal direction of the second chamber, such that the first chamber moves upward toward an occupant's knee and adjacent to a front face of the instrument panel, characterized in that each of the first and second inflatable chambers (120, 140) comprise single panels of material, wherein the lower portion of the first inflatable chamber comprises a folded middle portion of the single panel of material from which the first inflatable chamber is formed, and in that in a deployed configuration, the lower portion of the first chamber is attached to the second chamber at an upper portion of the rear face of the second chamber. a housing; an inflatable knee airbag positioned within the housing, wherein the inflatable knee airbag comprises: a first inflatable chamber; and a second inflatable chamber fluidly coupled to the first inflatable chamber in a serial configuration, such that during inflatable knee airbag deployment, the second chamber is at least partially inflated before the first chamber; a first inflatable chamber; and a second inflatable chamber fluidly coupled to the first inflatable chamber in a serial configuration, such that during inflatable knee airbag deployment, the second chamber is at least partially inflated before the first chamber; an inflator coupled to the airbag at the second chamber, wherein in the deployed configuration, the first chamber is located above the second chamber, wherein both, the first chamber and the second chamber each have a rear face (124, 144) pointing towards the instrument panel when the knee airbag is in the deployed configuration, wherein in the deployed configuration, an angle between a rear face of the first inflatable chamber and a rear face of the second inflatable chamber is greater than 90° and upon activation of the inflator, a portion of the inflatable knee airbag exits the housing in a downward direction toward a floorboard of the vehicle and wherein during deployment, the second chamber travels in a predominantly horizontal direction, relative to the floorboard, and wherein during deployment, the upper portion deploys in a direction that is at an angle with respect to the horizontal direction of the second chamber, such that the first chamber moves upward toward an occupant's knee and adjacent to a front face of the instrument panel, characterized in that each of the first and second inflatable chambers (120, 140) comprise single panels of material, wherein the lower portion of the first inflatable chamber comprises a folded middle portion of the single panel of material from which the first inflatable chamber is formed, and in that in a deployed configuration, the lower portion of the first chamber is attached to the second chamber at an upper portion of the rear face of the second chamber.