Review on VaygWay Adjustable Black Car Cup Holder - Folding Console Bottle Can Holder - Universal SUV RV Jeep Car Organizer - Window Suction Insert - Vehicle Drink Holder for Improved Storage and Accessibility by Josh Culotta

This thing is amazing! It's been in my car for a few weeks and I've never had to reattach the suction cup, but I have had to reattach my phone holder 3 times due to the change between hot and cold weather. They're too big for my bottles, but it's okay, they won't fall out. It *almost* fits in my 32oz Hydroflask. It's about ½ inch smaller in diameter. The way it wobbles as it spins ensures you get minimal splashes or spills from the cup while maintaining fluid levels. I would recommend it to anyone who needs an extra cup holder.