1. Comprehensive Set: This package includes six silicone bite valves in a vibrant color, each featuring an inner column. Ideal for personal use or sharing with friends and family, ensuring you always have a spare. 2. Universal Fit: Designed to be universally compatible with most hydration packs, these bite valves are particularly suited for Osprey hydration systems. 3. Superior Quality Material: Crafted from silicone, these bite valve sheaths offer durability, elasticity, and reliability. They are tasteless and safe, enhancing your hydration experience during any activity. 4. Hassle-Free Installation: Easily replace your old or damaged bite valves without any modifications to your hydration pack. Simply remove the old valve and insert the new one for a quick and effortless upgrade. 5. Versatile Use: Perfect for a variety of outdoor activities such as biking, running, and hiking. These bite valves serve as essential replacements or upgrades, ensuring you stay hydrated without interruptions. 6. Please note: the physical product may have slight color difference or other minor differences, which do not affect the use. Please do not mind, thank you! 7. Colour: Blue/Red 8. Material: silicone 9. Package Contents: 6 * silicone bite valve Sheath 10. Only the above package content, other products are not included. 11. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.