- Expandable Holder for Large Bottles and Mugs: Designed to securely fit bottles and mugs ranging from 3.4 to 3.8 inches in diameter, including popular brands like Hydro Flask, Yeti, RTIC, Nalgene, Camelbak, and Klean Kanteen. - Stability and Security: Features four rubber tabs that ensure your drink remains in place, even on bumpy roads. This design prevents spills and keeps your beverage conveniently accessible while driving. - Compatibility Check: Ideal for cylindrical cup holders. Please verify your vehicle's cup holder dimensions to ensure a proper fit, as this model may not work well with embedded or irregularly shaped cup holders. - Perfect Fit for Popular Sizes: Works best with the 24oz Yeti Rambler (note: 14oz Rambler is not compatible). Always compare your cup or bottle dimensions with the specifications provided before purchase. - User-Friendly Design: Comes with an instruction card to guide you through installation and usage, making it easy to set up and start using right away. - Practical Use Cases: - Perfect for road trips, keeping your favorite beverages secure while traveling. - Great for daily commutes or errands, allowing easy access to hydration on the go. - Ideal for outdoor activities, ensuring your drink stays put during adventures. This adapter is a must-have for anyone who wants to enjoy their favorite drinks without the hassle of spills or instability. Ensure a snug fit and optimal performance by checking compatibility with your bottles and vehicle before purchasing.