Whether you set down your pack on the muddy trail or in the snow, protect what goes into your mouth from dirt and debris while slowing down the freezing process with the updated PlatypusA(R) Bite Valve Cover. The new shape ensures your cover stays closed and it fits with all Platypus hydration system bite valves. Specs Weight (Standard): 0.3 oz Weight (Metric): 0.01 kg Width (Standard): 1 in Length (Standard): 1.3 in Height (Standard): 1.7 in Country of Origin: Made in U.S.A.