WarmCare 2Pcs Universal Car Cup Holder Adapter Expands Adjustable Hold Drink Water Bottle Mug Headrest Seat Back Organizer Auto Mount

One out of the two I received works great! One broke as soon as I hooked it up to the headrest .. the other is holding up great so far.

I was able to install it at some times, but not all. Fell down half of the time when I rolled up ior down my window. I guess it was worth it for the price, but I guess I would have preferred to pay more for one that I knew would actually work.

Like that it goes on the window

Too short and the arms flex too much. Works OK for a 12oz can. Anything larger, particularly taller, is likely to topple out.

In addition to scratching the window it has another lovely quirk. If you roll your window all of the way down it also catapults whatever drink you have in it all over you while driving. They've been recycled and sent to the depths of some kids tennis shoe.

Not work at all, no fit between the glass and the window frame or rail. I don’t used.

Flimsy. If your window is down and you roll it up, the cup holder may push out, especially if empty.

They seem a little flimsy but they stay put and hold water bottles great and I put a car ashtray in it and it works great.