The key feature of the expandable cup holder insert is its ability to adjust its diameter to securely hold different-sized containers. This adaptability makes it a practical solution for individuals who frequently switch between different drink container sizes or those who have larger or irregularly shaped cups.

The insert is designed to be easily placed and removed from the cup holder, and it is engineered to be stable and secure, preventing spills or tipping during vehicle movement.

I hope you enjoy and this design solves a problem.