Here's what other sites are saying:
MSR Backpack Accessories Bite Valve 57061. It features the highest flow rate on the market a leakproof design and mouth- and hand-activation options a great upgrade for your current hydration system.
This innovative bite valve fits all standard hydration-system drinking tubes.
New for 2006, MSR(R) Bite Valve fits all standard hydration system drinking tubes.
Fits all standard 0.25 in (0.635 cm) hydration-system drinking tubes. Features the highest flow rate on the market and a leak-proof design.
Where to Buy
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Yeti Rambler Tumbler Straw Lid
Bison Designs Bottle Bandit
Guyot Designs SplashGuard
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Nalgene Insulated Water Bottle Sleeve
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Platypus Bite Valve and Drink Tube Insulator
$13 - $19