New, lightweight valve self seals after each sip and can be opened and locked with one hand to prevent leaks when not in use. A dust cover protects the silicone valve from outside elements.

• High-flow valve delivers water when you need it most
• Self-seals after each sip and can be open and closed during activity with one hand
• Dust Cover protects silicone bite valve from collecting dirt
• Universal diameter fitting
• Safe & Reliable 100% BPA and PVC Free
• Diameter: 6 mm / 0.25 in
• Weight: 10 g / 0.4 oz
• Materials: PP/POM, Silicone