A motor vehicle comprising: a side; a roof; and an airbag comprising: a side chamber that extends downwardly along said side of said motor vehicle when said airbag is in a deployed position; a roof chamber separate from said side chamber, wherein said roof chamber extends inwardly along said roof at least to a position vertically above an inner side of an occupant's head for an occupant sitting in a normal position of said motor vehicle when said airbag is in said deployed position; a corner chamber located separate from said side chamber and said roof chamber, said corner chamber located between said side and roof chambers when said airbag is in said deployed position; and a tether that maintains a desired shape of said corner chamber when said airbag is in said deployed position, said tether selected from one of: a plurality of tethers, each of said plurality of tethers extending in a radial direction between said side and roof chambers, a single tether that extends at least 50% of a length of the airbag in a longitudinal direction, and a tether that forms a continuous surface between said side and roof chambers along said at least 50% of said length of said airbag in said longitudinal direction. a side; a roof; and an airbag comprising: a side chamber that extends downwardly along said side of said motor vehicle when said airbag is in a deployed position; a roof chamber separate from said side chamber, wherein said roof chamber extends inwardly along said roof at least to a position vertically above an inner side of an occupant's head for an occupant sitting in a normal position of said motor vehicle when said airbag is in said deployed position; a corner chamber located separate from said side chamber and said roof chamber, a side chamber that extends downwardly along said side of said motor vehicle when said airbag is in a deployed position; a roof chamber separate from said side chamber, wherein said roof chamber extends inwardly along said roof at least to a position vertically above an inner side of an occupant's head for an occupant sitting in a normal position of said motor vehicle when said airbag is in said deployed position; a corner chamber located separate from said side chamber and said roof chamber, said corner chamber located between said side and roof chambers when said airbag is in said deployed position; and a tether that maintains a desired shape of said corner chamber when said airbag is in said deployed position, said tether selected from one of: a plurality of tethers, each of said plurality of tethers extending in a radial direction between said side and roof chambers, a single tether that extends at least 50% of a length of the airbag in a longitudinal direction, and a tether that forms a continuous surface between said side and roof chambers along said at least 50% of said length of said airbag in said longitudinal direction. a plurality of tethers, each of said plurality of tethers extending in a radial direction between said side and roof chambers, a single tether that extends at least 50% of a length of the airbag in a longitudinal direction, and a tether that forms a continuous surface between said side and roof chambers along said at least 50% of said length of said airbag in said longitudinal direction.