Seat with a side airbag

A seat with a side airbag comprising:

• a seat having:
• a seat back frame;
• front and back pad members provided on front and back side of the seat back frame, respectively;
• front and back skins covering the front and back pad members, respectively;
• and
• a side frame mounted on a side of the seat back frame;
• an airbag unit as a side airbag mounted on an outside of the side frame and having an airbag in an interior thereof, the airbag being adapted to inflate forwards so as to be interposed between a vehicle body and an occupant on the seat to thereby absorb an impact at the time of a side impact;
• a front reinforcement fabric covering a front of the air bag unit, the front reinforcement fabric provided such that the front pad member and the front skin are provided in front of the front reinforcement fabric;
• a side reinforcement fabric covering a side of the air bag unit;
• and
• a shape retaining member retaining a side shape of the seat, and a side skin both of which are provided on an outside of the side reinforcement fabric,
• wherein the front reinforcement fabric and the side reinforcement fabric are joined to each other in such a manner as to be deployed at an inflating position of the airbag by virtue of an inflating force of the airbag.