An airbag module for protecting the knees of an occupant located in an occupant compartment of a vehicle, the airbag module configured to be mounted behind an instrument panel of the vehicle and including a housing; and an airbag configured to be filled with an inflation gas. The housing may surround the airbag. The housing may include two connected portions. The housing may also be configured so that when the airbag is inflated and deploys the two portions of the housing disconnect and the first housing portion bends downward into a position where the first portion forms a ramp to guide the airbag from a stored position into the occupant compartment. The airbag module may also include a mounting mechanism configured to mount the housing to the instrument panel.