A knee airbag assembly is operable to restrain at least one leg of an occupant of a vehicle. The assembly includes an inflator, a housing, and an airbag that moves between a stowed state and a deployed state. The inflator is operable to selectively inflate the airbag to move the airbag from the stowed state to the deployed state. The airbag is housed within the housing in the stowed state, and the airbag extends from the housing in the deployed state. The airbag defines a package width when in the stowed state, and the airbag defines a deployed width when in the deployed state. A ratio of the package width to the deployed width is between approximately 0.8 and 1.0.