Ultra light and flexible design - The collapsible water bottle is a compact option for running, hiking, cycling and daily fitness. It weighs almost nothing and fits easily into hydration vests, running belts and backpacks. The soft flask serves as a marathon soft flask and a trail running bottle for staying hydrated on the move. Stay light on your feet - Purposely lightweight so you stay quick and unburdened. The water pouch avoids unnecessary bulk and is designed for reuse. This folding water bottle supports long term, versatile use. Multi purpose design - Suitable for marathon, cycling, mountaineering or daily use. Its flexible, portable form makes it ideal for sports and travel. Use in hot summer or mild spring and autumn environments. Made to move - Crafted for vigorous activities such as running, hiking and climbing. A great cycling water bottle and hydration pack companion. It folds and tucks into pockets or bags. Available in 5 size variations and freezable to double as an ice pack. Use scenarios - Use during a marathon or long training run, on cycling trips, or while hiking and commuting to the gym.