Comes with 4 bite valve silicone sleeves, each containing an inner post. Bite Valve Replacement Sleeves: Replace old or leaking bite valves on your hydration bladder. Compatible with most hydration bladder brands, including Hydraulics packs. Premium Silicone: Made from high-quality silicone material, offering excellent durability and elasticity. Odorless and free of harmful substances, providing a soft and comfortable bite for easy sipping and healthy hydration. Wide Application: Fits most hydration bladders of various capacities. Ideal replacement for cycling, running, hiking, and other outdoor activities. Color: Transparent-Red Material: Silicone Package Contents: 1 set * Soft water bottle spout Note: This package includes only the items listed. Other accessories are not included. Note: Due to lighting and monitor display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.