High Quality--- It is made of ABS thick plastic, heat resistant and flexible ,completely waterproof and easy to clean. Can be used for a long time. Universal car cup holder expander---Our cup holder is designed with a adjustable base, insert is expandable from 2.7-3.93 in diameter to fit different car center console cup holder, just twist the top of the adapter to expand or retract the base, ensure the adapter stays securely in your cup holder. Fit most bottles and mugs---Our car cup holder expander is big and deep enough for sport bottles and oversized thermoses, fits cup 2.2~3.9 in diameter.Works great for cars, golf-carts, boats, trucks, and RVs Extra cell phone holder--- Features of the cell phone organizer, our car cup holder expander could also be used for organizing little gadgets and personal belongings, like cards, pens, cellphone, etc. make sure everything in the car keep in order Multi-fuction---U-shaped slot, our large car cup holder can be perfectly placed in a cup with a handle without tilting (not fit for 14 oz Rambler). upper organizer is suitable for most bottles and cups, It can also be used to store mobile phones, drinks and so on