OK you can tighten it, in the car charger with a screw part. Then there is some kind of lever thinggy before the plug part. RoofMonkey my english help!
That changes the ankle and sits tight. From there you got the bendable snake part. The part where the phone sits is rotable and adjustable to different sizes. I like it because it sits right at my hands reach. I drive a small car with stick.
I had a few dashmounts and they just did not work. To far to reach, to hard to take off, if I needed to answer a call, to wobble, not fitting with my case etc. And we need to be able to ride long distance, charging our phones and devices. But I did buy it for its holder/mount part.