Filtering out bacteria and protozoa, the integrated filter of this flask has a lifespan of approx. 1000 liters and meets the US FDA standard.
A soft flask can be squeezed, and it flattens as you drink from it. This means you won’t form an air pocket that would allow your drink to slosh around. A great choice for trail running and fast hiking.
42 mm mouth
PFC-free, BPA-free