Car Cup Holder Expander - Our double multifunctional car cup holder is excellent products that make the driving experience more convenient and more safe, you also have more space to storage cup holder. Rubber base pad keeps even smaller bottles stable. | Double Cup Holder Storage - The upper cup holder for car is suitable for regular car cup holder with a diameter of 3 inches. The lower cup holder for large tumblers, bottles and cups up to 4 inches wide, so far has compatible with 32 to 40 ounce yeti ramblers, klean kanteens, nalgenes and hydro flasks. | Extendable Base - Adjustable base expands from 2.6’’ to 3.9’’, please notes that rotate clockwise to expand, rotate counterclockwise to restore. The cup holder expander base that expands to fill the console cup holder to fit different vehicles. Silicone pads on extenders provide grip. | Fit Most 32 Oz - 40 Oz Large Bottles - It also can work with most popular brands bottles and many large fast food cups in 3.4"-3.7" Diameter. But may not be compatible with certain styles of cup holders, such as cup holders that have a unique shape, are angled sharply, have a cover that flips up or in, or are located where the dashboard hangs over the cup holder. Please make sure to measure your vehicles' cup holder to ensure fit. | Easy To Install - Place the cup holder to the position of the car’s cup holder. Twist either the top or bottom portion and notches begin to protrude from the bottom section. Cover the rubber coaster to bottom of the cup holder base.