Mine too. All three pairs. The covering on the wires started cracking after a few months’ use. (That was after the earpieces came apart, but that was easy enough to fix with super glue.)
They should consider making the earphones with little connectors to plug into and sell a compatible cable separately, as it’s not very economic to have to replace the whole set when one wire breaks or shorts (hard to know for sure if you don’t want to tear it apart).
I’m keeping all three just in case someone eventually offers a repair kit and then I’ll be back in business.