Unaltra cosa non solo estetica ma anche funzionale è il cinturino che non ha lanello, quel classico anello che dopo un pò si consuma e si rompe e ti rimane il cinturino penzoloni. Fit very well they are the 55s not the 53s I?ve downloaded the new software before I had a good nearly 8 hour session on them. Comfort:For me, being a smaller guy and therefore having a smaller head, these are great, though I wont deny for some these could probably feel very tight on the sides of the head, I feel it a bit though not enough to be a bother. Its kinda short too. I havent had any pairing issues with my phone. Pretty good if you ask me. Those sandals only took a day to break in and are wonderful. I want to love them for how cloud like the step is but unfortunately they cant be worn very long without the strap digging into the top of my foot and leaving scratches between my toes. Unfortunately for me, after about the first two weeks I developed some chaffing that became a pretty hardcore rash on both inner thighs.