Review on Portable Treadmill Spinning Exercise Smartphone by Bill Russett

This product is designed for use in a car or exercise machine. I have tested it on my bike mounted on a trainer and also on my truck mounted on headrest posts. Let's start with what is used on the bike. It holds securely and mounts easily so you can set up your tablet and watch your favorite streaming service while you pedal and sweat. I usually do this with my wall mounted TV as a distraction, but I enjoy it a lot more. It's always right before your eyes, helping you not focus on the torture you're putting yourself through! Truck use was not necessarily desired. Attaches to headrest but not secure. I still think the insert didn't fit the small diameter of the headrest post enough to hold it securely. It will sag and sway as the truck moves. I'm sure using foam rubber would help, but I don't think about my own solutions. Overall, I'm happy with the usefulness of my device, although the term "universal" isn't entirely appropriate due to the fact that it's now mounted on large-diameter foam and treadmill poles. It was firmly attached to the handlebars of my bike. The usability in vehicles is still questionable, but it can simply be due to the diameter of my headrest columns and it can fit on other vehicles. Pros: - With the right diameter, the mounts fit snugly - Decent range of motion for setting angles - Inserts have room to "snap in" so no fiddling with use (see photo) - Good value for money. and mostly functional. It has earned a permanent place on my bike.