THERMOPLASTIC ELASTOMER COMPOSITION AND MOLDED BODY

A thermoplastic elastomer composition according to the present disclosure includes a component (A): an elastomer having a glass transition temperature of 0°C or lower, having at least one structural unit of a structural unit that is a hydrogenated isoprene-derived structure and an isobutene-derived structural unit, and having an unsaturated bond; a component (B): an α-olefin-based thermoplastic resin (where a 4-methyl-1-pentene α-olefin copolymer and a case corresponding to a component (E) to be described later are excluded); a component (C): an aromatic petroleum resin, an aliphatic petroleum resin, an aliphatic/aromatic petroleum resin, a dicyclopentadiene-based petroleum resin, a terpene resin, a rosin derivative, a 4-methyl-1-pentene α-olefin copolymer, and hydrogenated substances thereof; and a component (D): a crosslinking agent, in which the thermoplastic elastomer composition is formed by dynamic crosslinking of a mixture containing the component (A), the component (B), and the component (C) in the presence of the component (D).