Water that tastes good, goes down good. Made with taste-free TPU, the HydraFlex drink tube is designed to keep your water tasting fresh. And because it&';s non kinking, you receive a steady flow every single time. Features: Lightweight, high flow Comet valve self seals after each sip and can be opened and locked with one hand to prevent leaks Flexible and non-kinking tube Tube designed in the ideal durometer for easy routing Universal 1/4 in diameter fitting with Plug-N-Play connect system 100% BPA & PVC free, wide working temperature range (can be frozen - max temp 60Adeg C / 140Adeg F) Specs: DIAMETER 6 mm / 0.25 in WEIGHT 51 g / 1.8 oz LENGTH 914 mm / 36 in MATERIALS TPU, PP/POM, Silicone