So Im always worried in finding replacement mics. They can be adjusted to fit even my giant head. These boots fit exactly to size. Overall, this is an awesome product that performs well, should last a long time, and is well worth the asking price. Its still functional, and fits well on my airpods case, but if you care about the look, you may be disappointed. So for the price and all these are great earbuds. Ma vi dico di più: sono molto lineari, nel senso che: hanno uno spettro che non infrange la regola dellenfatizzare frequenze o restituire quelle che non ci sono. Doesn?t fit perfect I would say they are not quite worth the $50 they cost, just because I know I could get some knock-off uggs (but genuine sheepskin) at sams or Costco for $30. Pésimo!