First I orderd the 12 to 18 month and the length was good but not the width. Works excellent on Yakima Baseline towers. Mic quality is laughable, from my experience, and doesnt always pick up your voice. Not sure if the mic picks up background noise too but I’m thinking it’s not because when he’s not muted and not talking no one is asking him to mute because of background noise. My review is honest. 3 months steady use was incredible. Now Im apprehensive about ordering these again. Since Im not an audiophile, the sound was fine for me most of the time. But I left/lost that pair on a trip in March and ordered a new pair. The product box was in excellent condition, and the seals were intact.