The crossbars look sturdy and the instructions seem fine. The sound quality is great and the mic is pretty good too. We dont want her little feet to slosh around in her shoes and cause a fall. The description of this iteam says that it has Bluetooth and so i bought this assuming that it has Bluetooth. The design looks quite robust and setup and mounting was quick and intuitive. They are just not quality. They are a bit wide for me, and I have wide feet already, but I believe that?s just part of the overall ?Crocs? fit. NOOOOOOOO, HURRY HURRY PUSH THE BUTTON, you hear like 5 people all yelling trying to accomplish who knows what. Take care to install it very well using the provided rubber pieces to add traction against your handlebars, because this thing will experience A LOT of vibration as you bike, but if you take a few extra moments to secure it properly, youve got yourself a top-notch product for an extremely reasonable price. It?s so cute and it fits snuggly on the AirPod case!