Patent ID: 8646562

Claim:
A vehicle seat comprising: a side airbag that, when there is a side collision of the vehicle, inflates and deploys above a side support portion of a seat cushion, between a waist area of a seat occupant and a vehicle body side portion; and a dilatant member that is formed of a material with a dilatant property and is provided at the side support portion, wherein: the dilatant member is interposed between an upper face of a seat cushion pad and a seat cover that covers the seat cushion pad, and the dilatant member comprises: an upper wall portion that is interposed between the upper face of the seat cushion pad and the seat cover; and an outer side vertical wall portion that extends to the lower side from an end portion at a vehicle body side of the upper wall portion, and that is interposed between a side face at the vehicle body side of the seat cushion pad and the seat cover.