BottlePro - Cup Holder Adapter for Hydro Flasks (32oz/40oz, Nalgenes (32oz/40oz), Yeti Ramblers (36oz), Klean Kanteens (32oz/40oz), and Other Large Bottles. Adjustable and Extendable. Version 2. This is our latest BottlePro cup holder adapter (version 1 has been discontinued). Adjustable 3-ring base that securely fits the majority of cup holders. This simple but effective design has LESS MOVING PARTS than some of our competitors, which means that your BottlePro will NEVER BREAK OR JAM UP. Soft Fit foam sleeve included with every BottlePro (not pictured, but trust us, it'll be included). This sleeve makes sure you get a great fit, even if your vehicle's cup holders are between BottlePro's base sizes. Use your Soft Fit foam sleeve and know that your vehicle's cup holders will be protected from scratches and damage. Opening on the side to accommodate travel mug handles. EXCELLENT CUSTOMER SERVICE (just read our company reviews). No risk. Easy refunds if it doesn't work for your situation. If you have any issues getting BottlePro to work for your situation, just let us know.