Soft Flask 500ml/17oz XA Filter
Soft Flask 500ml/17oz XA Filter, Ideal for longer expeditions like ultra-trails, the SOFT FLASK 500ml/17oz XA STD 42 filters bacteria and protozoa from natural water sources, so you can drink easily and safely without needing to carrying huge volumes of water. Shrinking as you drink to limit water bounce, the flask lets you know exactly how much you have left.