Vibration damping thermoplastic elastomer blends

A thermoplastic elastomer blend comprising:

• at least one non-hydrogenated styrene isoprene block copolymer (SIS) having a Weight Average Molecular Weight (Mw) greater than or equal to 50,000 g/mol and a Tan Delta Peak Temperature greater than or equal to 15° C. and less than or equal to 25° C.;
• at least one block copolymer selected from the group consisting of:
• a hydrogenated SIS having an Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C., wherein a ratio by weight of the non- hydrogenated SIS to the hydrogenated SIS is from 1:1 to 4:1;
• and
• a styrene-ethylene/butylene-styrene block copolymer (SEBS) having a Mw greater than or equal to 75,000 g/mol and a Tan Delta Peak Temperature less than or equal to 20° C.;
• and
• a tackifier having a softening point greater than or equal to 80° C.,
• wherein the at least one non-hydrogenated SIS is present in the thermoplastic elastomer blend in an amount of greater than or equal to 20 wt. % and less than or equal to 75 wt. %;
• and
• wherein the tackifier is present in the thermoplastic elastomer blend in an amount of greater than or equal to 1 wt. % and less than or equal to 40 wt. %.