AIRBAG DEVICE

An airbag device has a first side cushion that expands forward to cover one side of an occupant seated in the seat of the vehicle, a second side cushion that expands forward to cover the other side of the occupant, at least one inflator that injects gas to inflate the first side cushion and the second side cushion, and a connection that connects the first side cushion and the second side cushion. The connecting part is deployed so as to pass through the rear surface region between the seat and the occupant above the seat surface of the seat in the fully expanded state when the expansion and deployment of each side cushion and is complete, and is held in place by the occupant, pulling each side cushion and inward.