Please Note - Our product is compatible with Stanley Quick FLIP GO 24oz and 36oz water bottles only. It is not compatible with other brands or sizes. Please confirm your water bottle model before purchasing. Effectively Prevent Leakage - Designed to help prevent leaks and keep your water bottle clean. Using these replacement stoppers and gaskets can enhance your user experience. Package Includes - 6 replacement stoppers and 6 replacement seals (bottle not included). This quantity meets typical replacement needs and allows for sharing. High Quality Material - Replacement stoppers and gaskets are made of high-quality silicone, safe for daily use. Dishwasher safe or hand washable. Color: Black & Gray. Material: Silicone. Package Contents: 6 x silicone stoppers, 6 x sealing gaskets. Only the listed items are included; other products are not. Note: Due to lighting and display differences, the color in the image may vary slightly from the actual item. Measurement may vary by +/- 1-3 cm.