• Reservoir Bite Valve Cover protects silicone bite valves from collecting dirt, dust, and debris when setting your pack down
• Bite Valve Cover is specifically designed to work with any Platypus Water Reservoir, including the Platypus Big Zip EVO and Hoser
• Helps slow down the freezing process when used in cold weather
• Weighs 0.3 oz and measures 1 x 1.3 x 1.7 in
• Made in the USA