Even on Michigan's bumpy back roads this mount holds tight

Out of fear that the plastic shaft or other might break, resulting in an iPhone 6S+ with road-rash (or worse), I added a length of paracord through the silicone wrap to my handlebars... figuring the worst case would be my phone dangling from the handlebars

I was concerned about this phone holder because the roads I ride on are REALLY bad with potholes and uneven pavement

After riding for little over 2 hours threw town on rough roads

the roads get somewhat bumpy but the phone is very secure

It held up through rough roads and high speeds

so no off road rough and bumpy rides

I have used it on the road at freeway speeds as well as on rocky trails and even over jumps and my phone has not moved