SEAT-MOUNTED OCCUPANT RESTRAINT SYSTEM

A restraint system for helping to protect an occupant of a vehicle having a roof and a cabin with a seat for the occupant includes an airbag. The airbag has a stored condition within the vehicle seat and is inflatable to deploy laterally in the cabin to a deployed condition in front of the occupant. The airbag is configured to utilize the vehicle seat as a reaction surface for restraining the movement of the airbag in response to occupant penetration into the airbag.