Comprehensive Set: This package includes six high-quality silicone bite valves, each featuring an inner column. Ideal for personal use or sharing, ensuring you always have a spare. Universal Fit: Designed to be compatible with most hydration packs, these bite valves are especially suitable for Osprey hydration systems. Superior Quality Material: Made from premium silicone, these bite valve sheaths offer durability, elasticity, and reliable performance. They are tasteless and safe, enhancing your hydration experience during any activity. Hassle-Free Installation: Easily replace old or damaged bite valves without modifying your hydration pack. Simply remove the old valve and insert the new one for a quick upgrade. Versatile Use: Ideal for outdoor activities such as biking, running, and hiking. These bite valves serve as essential replacements or upgrades to keep you hydrated on the go. Color: Red Material: Silicone Package Contents: 6 x Silicone Bite Valve Note: The package includes only the items listed above; other products are not included. Slight color variations due to lighting and display differences may occur and are not considered defects. Measurement error allowed is +/- 1-3 cm.