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 work well with various hydration systems. Superior Quality Material: Made from premium silicone, these bite valves 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: Suitable for outdoor activities such as biking, running, and hiking. These bite valves serve as essential replacements or upgrades to help maintain uninterrupted hydration. Note: Slight color variations may occur due to lighting and screen settings. This does not affect functionality. Color: Blue Material: Silicone Package Contents: 6 x Silicone Bite Valve Sheath (Other items not included) Note: Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.