With a lightweight and compact design, the Salomon Soft Flask 250mL/8oz 28mm provides a convenient bottle for hydration on-the-go. This Soft Flask's smaller size can fit in most running vests, belts, or the palm of your hand, while the updated Rocket Valve allows for quick fluid release. As an added benefit, the flask uses durable TPU material that can withstand the rigors of trail running, and a nifty fill-scale helps you monitor the remaining fluid volume.