Hydrapak Comet Bite ValveLightweight, high flow comet valve self seals after each sip and can be opened and locked with one hand to prevent leaks Includes: comet Bite Valve and Dust cover Product Weights and Dims: Diameter: 6mm 25in Weight: 10 g 4 ozFeatures of Hydrapak Comet Bite Valve HIgH FLOW VALVE Lightweight, self-sealing comet bite valve c..