no complaints whatsoever. Looking forward to the release of 2. I put the phone in the rubber straps and connect that to the bike. extremely efficient and easiest to drive. Expands to whatever size youd like, so it will look great just about anywhere. Very great quality. Pulley system is really good an easy to install but the quality of the wire is not great In fact I ordered 2 pair. Had those for 4 years, they never squeaked, and my sister is still using them. If you like yoga mat sandals, but are tired of paying a higher price for them, then this is the option for you!