These slides are very very very comfortable! AND I would have to buy new iPhone and iPod blah blah blah new connections blah blah blah upgrades! They are very light and comfy, sometimes I forget Im wearing them and more than once have left the house, forgetting I was wearing "slippers" but these really are nice looking enough to use "out" as a casual shoe and really look great with jeans. Right out of the box i could not browse radio stations with the next/back buttons. I sounded clear and concise according to my teammates. I have a Wahoo speed sensor and there is a significant variance between the speed measurements in Wahoo speed sensor and the speed measurement in the app (across the board for Zwift, Fulgaz and Rouvy). It is very light weight and doesnt weigh me down. easy to put on Der Fahrradständer erfüllt meine Erwartungen. It seems to have just the right frequency response for picking up the Human voice.