A side airbag cushion (10, 10A or 10B) has a front side panel (22), a rear side panel (24), a top panel (26) spaced between the upper edges of the front and rear side panels (22, 24), and a bottom panel (28) spaced between the lower edges of the front and rear side panels (22, 24). The top and bottom panels (26, 28) are configured to create a contoured or concavity (23) shaped fully inflated side airbag cushion with a larger sized forward end (27) volume and with a smaller sized volume at the occupant mid-location (25) wherein the inflated airbag cushion fills the gap between the door trim (7) and the occupant (2).