The present invention relates to an airbag housing cover containing a thermoplastic elastomer composition which contains the following components (A) and (B) and contains from 10 to 300 parts by weight of the component (B) per 100 parts by weight of the component (A) and in which the melt flow rate at a measurement temperature of 230° C. and a measurement load of 21.18 N is from 5 to 50 g/10 min: Component (A): a polypropylene-based resin Component (B): an olefin-based block copolymer containing a polymer block composed of ethylene and an ethylene α-olefin copolymer block.