use them to avoid the friction and scratching between your outdoor furniture and umbrellas, and to keep your umbrella stable and secure during windy or rainy weather. table umbrella hole inserts are made of silica gel which is soft and reliable. This ensures that the inserts can be used for a long time without worrying about fading or breaking. Even in the strong wind and storm, they can also be stable, giving you a better user experience. Unique Design: The conical design of our silicone umbrella wedge makes the umbrella more stable and secure. This design ensures that your umbrella stays firmly in place without the risk of swaying or toppling over during strong winds or storms, providing you with a more enjoyable outdoor experience. Easy to Use: The umbrella stand sleeve stabilizer is easy to install and assemble in seconds. It's small and light, allowing you to take and store it for travelling or outdoor activities. Wide Usage: Our umbrella table ring hole is very suitable for versatile scenarios, including beaches, pool areas, coffee shops, bookstores, balconies, courtyards, and more. Colour:Black Material:Silicone Package Contents: 2 x Umbrella Table Ring Hole Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.