Conformable eartip

A conformable eartip comprising:

• a round flange comprising a sealing surface arranged to mate with walls of an ear canal, wherein the round flange extends from an insertion end to an opposite end of the conformable eartip, wherein the sealing surface is tapered from the opposite end toward the insertion end of the conformable eartip, wherein the sealing surface comprises a maximum outside diameter at a relaxed state, D2, and a maximum width at a compressed state, Z1;
• and
• a core joined to the round flange at the insertion end of the conformable eartip, the core extending from the insertion end to a base of the core toward the opposite end of the conformable eartip, the core comprising a channel extending through the core from the insertion end of the conformable eartip to the base of the core,
• wherein the round flange and the core is at least one of:
• high-density closed-cell foam, and
• open-cell foam comprising a surface sealing coating.