Love it. My granddaughter is in a booster seat and when she falls asleep it holds her head up just like her car seat did before going to a booster.
Finally a product that works! I think I tried all of them, but still the kink in the neck was inevitable. This one is expensive, but worth every penny. It keeps the head gently to the side, not forcing it forward or sideways like these other soft headrests. It works great with or without booster seat, it is low enough. It even beats the booster seat headrest support that I removed long time ago, because it was more of problem than solution. It is easy to install, easy to maintain and can be stowed away if not in use. Even the 6 year old can bring it down from upright position when needed. Absolutely recommended and the last headrest I will ever buy.
We purchased this for our 6 year old in preparation for a 10 day road trip where we hoped he would be able to sleep more comfortably. I installed the device before our trip to see what he thought and it has been an unquestioned hit! He loves it and uses it often. He generally does not sleep in the car, but since the addition of the headrest he has slept on multiple occasions, and thankfully slept well on our trip out west.
Installation was simple and should work on any vehicle with a headrest that raises to expose the two metal poles. Took less than five minutes and I could easily move it between cars just as quickly. The device is well made and has held up to frequent use over the last six weeks. Lowering the headrests is simple as well, and my 6 year old figured it out on the first try. He easily raises and lowers it when he chooses to.
It is important to have reasonable expectations though, this device does not cradle your kids head, it provides support. We brought a blanket that he placed between his head and the headrest for additional support and it helped make it even more comfortable.