Car Cup Holder Expander with Phone Holder, Adjustable Base Compatible with Yeti 20/36/46oz, Hydro Flasks 32/40oz, Fits Most Cup Holder, Diameter Bottles in 3.4"-4.0"(1PCS)

My 40 oz artic bottle fits perfectly. It fits with the boot as well but it gets stuck on the flaps of the cup holder when I try to pull it out. So I don't recommend using the bottle with the boot in the cup holder. Besides that it works great. Easy to install and has a slot for a handle. I got one for my car and my husband's car. I like the phone holder and the coin holder too!

I have been looking for a holder that would fit in my cup holder that would hold my 32.oz water bottle. I found it very easy to put together. When I tighten the holder around my bottle it is stable.

New car came with cup holders that didn’t quite fit my preferred tumblers (new car is a manual and gear shifting needs more space) so I bought these to add to the backseat for second cups on longer trips. My 50oz tumblers fit but is not stable. If the flaps were more sturdy I think it would be ideal.

These are so easy to use and fit perfectly in the cup holders. When you have a bigger insulated cup and they won’t fit in the holder, this is perfect

Works just as expected! Glad I bought it