Has anyone washed them? I would be curious to know how it is after a wash / washes? My students said that it was much easier to hear me in the back and my voice was clearer. Overall a painless purchase! Since I need to replace them every year, I try to wait until they go on sale before I buy the next pair. As an aside, if you are interested in a simple GPS app for using on your phone while riding, try GPS Odometer. I ordered three of them. Overall worth the $20 but are gonna have to maintain and keep dry, as I see some serious sweating in my feet?s future. My last pic shows me holding a 5mm Allen key (the most commonly used size on bicycles) somewhat close to where a disc brake rotor would sit so you can see theres little clearance. Was looking for a minimalistic approach to hanging/displaying bike. That is disgusting and unacceptable.