An inflatable safety restraint system that is downwardly deployable from a roof of a vehicle for protecting an occupant of the vehicle. The inflatable safety restraint system includes at least one inflatable airbag and at least one joint closing the shape of the at least one inflatable airbag to circumscribe an internal cavity. At least one inflator is in fluid communication with the at least one inflatable airbag for inflating the at least one airbag. Upon deployment, the inflatable safety restraint system defines a closed shape for surrounding the occupant of the vehicle.