Amazon Basics Expandable Car Cup Holder with Adjustable Base, Fit Big Bottles 3.4 to 3.8 Inch, Black

Ideal for use in cars, trucks, SUVs, recreational vehicles such as boats, RVs, and more
Expandable base adjusts to fit into most vehicle cup holders between 2.5-3.75 inches
Durable ABS plastic construction easily withstands rugged driving conditions
Flexible rubber grip tabs inside allow you to place and remove cups and bottles to prevent tipping
Compatible with Yeti Ramblers (20, 26, and 30 ounces); Hydro Flasks (32 and 40 ounces); Nalgenes (30, 32, 38, and 48 ounces); beverage containers between 3.4-3.8 inches; and most 32-40 ounce bottles; note: does not fit Rambler 14 ounce mugs