Just gotta say...GREAT PRODUCT! I have a 2006 Toyota 4Runner, and the factory cupholders are a joke! They are HUGE, and they have these arms that swing out to adjust to different sized drinks, but I've yet to find any cup that they hold very well. I've only had the Drink Docker a couple weeks, but already have used it on fast food cups, water bottles (various brands, sizes, etc), and have yet to have anything spill, move around, or even hint at tipping over!
I can't remember what size I ordered, but in my opinion, it's perfect for my 4Runner. Also, I noticed that it came with some pads to adjust make it fit better for different vehicles. That was a great idea, btw, but so far I haven't had to use them in my 4Runner. I still have them just in case, but I don't think they'll be needed down the road.
Thanks for making a great product!