Review on Convenient and Practical Car Door Pocket Hand Sanitizer Holders - Organize Your Car Interior with these Plastic Seat Side Storage Holders by Kyle Ross

I like this idea. I needed an extra cup for hand sanitizer as I had bought a new car and lost the extra cup holders that used to hold it. It looks like it's exactly what I wanted. But the clamps aren't strong enough, any bumps or corners I made while riding would cause them to pop out of the door or midsection. It didn't work out as I had hoped. For the record, it held my bathtub and hand pump body sanitizer perfectly and it didn't bounce. But the clip to attach it to my car didn't work at all. I can't speak to vent clips because I haven't used or tried them.