I was looking for light pro headphones that can keep connection to 2 phones via multipoint Bluetooth. I bought them for going back and forth to swim lessons in the winter which is why I chose the fuzzy on the inside so they are a little warmer than the regular crocks. But it is incredibly sturdy and well made for the price. They were a little flimsy putting them in but for the price what do you except. In this shoe I got the 8. I also ignored the advice that said to break them in by wearing them for short periods of time and I wore them to work (as an elementary school teacher. Pésimo producto a un precio excesivo. The headphones seem good for the price so far. Answering question 3. Best of all they were extremely comfortable for the whole call.