My bottle doesn’t fit in my cup holder, these work gray as mine has a loop for carrying.Very easy to install and the hooks do what they're supposed to doI like how handy they are but they are knocked off quite easily.They work great and are easy to install. If you have to move your seats and/or headrests often, they may fall off. Again, very easy to install. I got these to hang my hats on so my wife and kids stop throwing them in the floor and then stepping on them. They work great for hanging purses and groceries.Easy to use!Very sturdy. Useful product. Value for product is goodI have a wheelchair-accessible van with a side ramp, which means zero cargo space bc anything on the floor’s gonna end up under my powerchair. These little hooks are so essential for me. They’re low-profile and ridiculously strong—I’ve put two heavy shopping bags AND my (like 10lbs) backpack on just one of them, and it held all of that without breaking or even stretching. They fit perfectly (easily and securely) around the headrest poles and are easy to move with one hand or flip around so I can keep my bag on the passenger seat without worrying about it falling into the narrow transfer space where the console would be in other cars. They’re low-profile and keep all the stuff in my car out of the way of my wheelchair, even if I hang stuff on the back of the passenger seat (Which I can already barely clear when I’m exiting my van). I use them on the front seats and the back seats, to keep my grocery bags from rolling off the back seat onto the lowered floor (since I don’t have a middle bench to stop things from falling everywhere). These little hooks solved SO many problems and make traveling with a powerchair so much easier and less frustrating. Plus, they’re so cheap I can buy enough for every headrest in my van guilt-free lol.Definitely recommendVery sturdy material. Very handy add on for cars. Great price.Seems to be sturdy but unfortunately the length is too short for my 2012 Mazda 3 front seats. Fits the back seats fine but i also ordered a car trunk organizer which when received would make this redundant.Product feels cheap, sturdiness not so impressive, but does the job for now and none have broken yet.