Seven Sparta Car Cup Holder Expander with Adjustable Base, Compatible with Hydro Flasks 32/40 Ounce, Compatible with Yeti Ramblers 20/26/30 Ounce, Other Bottles in 3.4"-3.8" (Black)

I use a 40oz water bottle and my Model Y cup holders are too small for this bottle. This adapter twists into the cup holder easily and very securely, solving the problem of me putting my water bottle on the passenger floor or seat and losing it when it inevitably rolls underneath the seat. Also very easy to clean with the included cup coaster!

Fits in my 2004 Chevy Tahoe no problem if you drive one you know any type of big water bottles don’t really like to stay put so this helped with keeping my big water bottle from tipping over all the time I would buy again

Worked good for what I needed in My 1987 Corvette. I gave it a 4 star because I wished the rubbers on the inside were a little stiffer. Would help hold some smaller drinks. It did fit my existing drink holder in my 1987 Corvette which are very shallow.

Works perfect to hold bigger water bottles like an Artic or yeti, fits in stock car cup holders

I used these in my 2018 Jeep Wrangler JK. These work so well, they are really easy to install and hold very securely. They twist to expand to fit the cup holder so they adjust to fit many sized cupholders.I put my 32oz hydroflask in these daily and it stays secure. But it also holds smaller cups securely with the rubber tabs. I would definitely buy these again.

I use my 40oz tumbler to drink water every day and am always annoyed that it won't fit in a cup holder. I finally got one of these and I really didn't expect it to work or fit, but it did! I wasn't sure if my cup holder would work since it isn't 'perfectly round' like they say, but it went in just fine and I had no issue getting it to tighten in. My tumbler fit wonderfully and smaller drinks fit without tipping. I think I'm going to purchase more for my kids' big water bottles now.

The bottom part twisted, which definitely helps secure the cup in place. I thought the top adjusted as well but does not. Just an open hole.

These bad boys are da bomb! I have a 50 oz. water bottle and it not only fits, it doesn’t move even when taking a sharp turn. It fit into my cup holder and was easy to adjust for a perfectly tight fit. Also, given how firm the rubber tabs are on the inside of the holder, I can put a narrower cup/bottle in the cup knowing it’s going to stay put. Love these!