TL;DR: Keyboard locks up when using the volume roller, forcing a restart. These combine both as once I?ve fallen asleep they also block out most of the external booze. I like them so much that I started wearing them for errands, hiking, and to work. So, while I wear these, because of the wide fit, Im a little loud and clunky when I walk down the hall. It was very easy to install (did it alone) and only took about twenty minutes from start to finish. They did however give me a credit so I could order them separately. With the first step of assembly the rack had to be brought into alignment by pulling the pieces together. The key is used on the end knob to prevent anyone from loosening the clamps and stealing the crossbars. Very happy to find a snow boot we can both live with. Jeep.