EXPANDABLE BASE FOR DIAMETER 2.5"-3.75" CAR CENTRE CONSOLE CUP HOLDER: Seven Sparta car drink cup holder comes with a base that expands to fill the console cup holder to fit different vehicles, such as motorcycles, boats, trucks, RV's and golf-carts. If your vehicle's cup holder has edge obstructions, we recommend considering our Rubber Base Expander for a perfect fit. Vehicle Not Recommended: 2019-2023 RAV4, 2009-2018 Forester, 2020-2024 Outback, 2009-2015 Prius. FIT MOST 32 OUNCE - 40 OUNCE WIDE BOTTLES AND DIAMETER 3.4"-3.8": The car drink cup holder is big enough for oversized thermoses, it also can work with most popular brands bottles and many large fast food cups in 3.4"-3.8" diameter. Please measure your cup's diameter before ordering, taking into account the overall height for accurate selection. For cups with a diameter exceeding 3.8 inches, we recommend purchasing our Upgraded Expander. SECURES TIGHTLY WITHOUT TIPPING OR SPILLING: This car cup holder built with solid and thick plastic and the rubber tabs around the top of the cup holder hold the cup firmly in place without tipping or spilling when driving down the road. LARGE SLOT FOR CONTAINER WITH HANDLES: It is easy to remover the cup holder from the slot. And the cup holder has a base deep enough to provide great balance for your water bottle. UPGRADE VERSION: Thanks for our customers who feedback the problem about the cup base. Please rest assured that customer experience is always our first consideration. Now we have upgraded the material to solve this problem. Please be assured purchase. Why Choose Seven Sparta Car Seat Drink Cup Holder? The concept is good for most factory cup holder with more secure to hold the water bottlesfirmly when driving down the road. This is a must have if you enjoy the large water bottlesand want them secure in your vehicle. Well-Designed: Seven Sparta car cup holder fit diameter 2.5"-3.75" console cup holders. The base twists toexpand the bottom surface to fit the different sizes of factory cup holder and keep the waterbottles in place securely. NOT fit Subaru outback/Mazda 3/2005 chevy colorado. Locks In Place: The base is easy to insert and remove. The rubber tabs around the top of the cup holder willhelps smaller cups fit into the holder and stops the larger ones from rattling and spilling. Fit most brands bottles(3.4"-3.8" diameter): Compatible with Hydro-Flask: 32 oz. and 40 oz. Compatible with Klean Kanteen: 40 oz. Compatible with Camelbak: 32 oz. and 40 oz. Compatible with Takeya: 32 oz and 40 oz. Compatible with Healthy Human: 32 oz and 40 oz. Compatible with Yeti Rambler: 20 oz., 26 oz., 30 oz. Compatible with Yeti Mug:10 oz. Compatible with Nalgene: 30 oz., 32 oz., 38 oz., and 48 oz. Compatible with Stanley Travel Tumbler 20 oz., 30 oz.