Comprehensive Set: This package includes six high-quality silicone bite valves, each featuring an inner column. Ideal for personal use or sharing with friends and family, ensuring you always have a spare. Universal Fit: Designed to be universally compatible with most hydration packs, these bite valves are particularly suited for hydration systems. Superior Quality Material: Crafted from premium silicone, these bite valves offer durability, elasticity, and reliability. They are tasteless and safe, enhancing your hydration experience during any activity. 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. 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. Color: Blue Material: Silicone Package Contents: 6 x Silicone Bite Valve Sheath Note: The package includes only the items listed above; other products are not included. Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.