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.Note: Slight color variations may occur due to lighting and display differences. This does not affect functionality.Color: BlueMaterial: SiliconePackage Contents: 6 x Silicone Bite Valve SheathNote: The measurement allowed error is +/- 1-3 cm.