Sealed fine. Comodisimas para tus pies y andar. ) I am quite happy with my purchase. Love the low sandal, looks great on! Easy to hang around your neck and don?t get in the way or cause your head to feel compressed when not in use. Unlike many bike accessories that can be screwed or clamped to the handlebars, this is entirely silicone so you have to wrap a strap around the handlebar and hope it grips tight. There real easy to connect to your phone just pull up your Bluetooth and its there. The whole product is very nicely designed and packaged. Zip screws back in and it?s mounted again in seconds. No issues since the switch.