And the sound. I rated 4 stars just because I don?t know how durable they?ll be over time. In just this short time since purchase, my birkenstocks are in dire need of a sole replacement. It didn?t say that anywhere in the product info prior to buying. People used to have so much trouble hearing me on Skype/video calls using my webcam. I?m not sure it would be very good at holding more than three, but it does seem very well made. I put this together, by myself, in 1 hour 15 mins. This is a great buy and everyone in my family loves it. I can wear these for a long day of walking -say a day at a fair? With no issues. Think about that too.