A surrounding inflatable airbag assembly configured to deploy for a seat back of a vehicle is disclosed. Inflatable airbag assemblies may provide protection for an occupant in a vehicle collision event. In a collision event, or other event producing forward and/or lateral movement of the occupant relative to the vehicle, the disclosed inflatable airbag assembly may receive and support the occupant during ride down so as to prevent or minimize injury resulting from impact with a vehicle structure disposed forward or lateral to a vehicle seating position. The disclosed airbag may deploy from the seat back including a head back portion. During deployment, a front portion of the airbag may extend up and over the head of the occupant and further extend forward and downward in front of the vehicle seating position.