【Cup Holder Expander for Car】 With its unique rotate-to-open and auto-lock arms, whether you have a skinny travel mug or a bulky water bottle, our car cup holder expander automatically adjusts to provide a secure, stable fit. 【Designed for Oversized Drinkware】 This cupholder expander accommodates large bottles and mugs from 12oz to 64oz. Perfectly fits Yeti, Hydro Flask, Nalgene, and other big-brand tumblers and travel cups. 【All-Around Shock Absorption Keeps Drinks Secure】 Our cup holder expander constructed with reinforced PC and anti-slip inner buffers. This cup holder for car provides scratch-resistant and stable support, reducing spills on rough terrain. 【Flexible Expandable Base Fits Various Vehicle Cup Holders】 The universally adaptable base of the cupholder expander expands from 2.56" - 3.93". Ensuring this cupholder expander works in cars, trucks, SUVs, RVs, and boats. 【Effortless Tool-Free Setup & Handled Mug Compatibility】 Quick twist-to-install design of the cup holder expander requires no tools—ideal for all drivers. The side opening allows easy handling of mugs with handles for full versatility. Cup Holder Expander, Cup Holder Expander for Car, Adjustable Cupholder Expander for 2.6"- 4.8" Yeti, Hydro Flask, Nalgene, Takeya, Camelbak, Ramblers, Owala, Tumblers, Mugs, Bottles, with Sunglass Holder, No Tools Required