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: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3 cm.