I have had these shoes for a little more than 6 months. This feature is awesome! Do note that if you have never used or tried Bone Conducting headphones before, the bass response isnt the best. Sound is Amazing on both ends. But I would have easily overlooked that had they come close to fitting. Which I hated! Wish it had a loop and carabiner but I rigged something up and I am all good now. Im personally using them as accommodating resistance for shoulder press, squats, and deadlifts and they work great. High quality sound combined with first-rate noise cancellation. Buddy who had escaped from his abusive owner, an unsuccessful professional clown named Norman F.