Please note: Our product is compatible only with Stanley Quick FLIP GO 24oz and 36oz water bottles. It is not compatible with other brands or sizes. Please verify your water bottle model before purchasing. Effectively helps prevent leakage: Designed to help protect your water bottle from leaking or getting dirty. Using these replacement stoppers and gaskets can enhance your experience. Package includes: 6 replacement stoppers and 6 replacement seals (bottle not included). The quantity provided meets typical replacement needs and allows for sharing. High-quality material: Replacement stoppers and gaskets are made of durable silicone, safe for daily use. Hand washable or dishwasher safe. Color: Black & Gray. Material: Silicone. Package contents: 6 silicone stoppers, 6 sealing gaskets. Only the listed items are included; other items are not part of this package. Note: Due to lighting and display differences, the color in the image may vary slightly from the actual product. Measurement may vary by +/- 1-3 cm.