Mammut Soft Flask

"The Soft Flask from Mammut is the perfect hydration system for anyone who wants to do without excess weight but is still looking for maximum functionality. This innovative drinking bottle, manufactured by HydraPak, is made from 100% BPA and PVC-free materials and impresses with its versatility. It is both freezer- and heat-resistant, which means you can store it in the freezer or fill it with hot drinks. This makes it the ideal companion for outdoor adventures in any weather."
"With its siliconebeverage valve, the Soft Flask offers a high flow rate so that you can quench your thirst quickly even during intensive training or on long hikes. A special feature of this bottle is that it contracts when drinking and therefore only takes up the space required by its contents. This means it fits perfectly in any running vest or backpack without taking up unnecessary space. In particular, it is also compatible with the Aenergy TR5 vest, making it the ideal addition for light and efficient adventures"