make yourself comfortable during your trail runs. Thanks to its flexible shape, your 500 ml flask is easy to carry in hand and can be easily stowed away in your bag or trail running jacket. key benefits: • compact design: save space thanks to the flexible and compressible material of your flask. • noise level: your flask will remain silent while you run by easily removing the air inside. • lightweight: run and feel light: your flask weighs only 35 g when empty. • ease of use: drink easily thanks to the opening system that involves rotating the mouthpiece. • mouth comfort: run comfortably with the accessible silicone bite valve for mouth comfort. technical information: a flexible flask making your trail runs more comfortable.: offering you flexible containers for your trail runs is the aim of our design team. compared with a rigid water bottle, your flask is lighter, less noisy when you run and does not hinder your movements as much. What's more, it occupies less space: you can compress it gradually as you drink the contents, thereby reducing its volume! ; how to maintain your flask ?: to prevent any taste of plastic, rinse your flask in clean water 3 times before using it. Then, dry it upside down without the mouthpiece. If the plastic taste persists, place your dry flask in the freezer. you can remove the mouthpiece to clean it. This is particularly important if you are using sugary drinks! Finally, so that it doesn't make noise while you are running, remember to remove any air by sucking out the air bubbles. ; what is the flask's running time and what is it compatible with?: with its 500 ml capacity, your flexible flask is useful for about one hour of running time, on average. And in order to simplify your preparation and equipment, your 500 ml flask is compatible with all our trail running bags and belts! ; a user-friendly design when trail running.: your 500 ...