Sawyer Foldable Bottle 1L (3-Pack)

The Sawyer Foldable Bottle 1L comes as a set of three, each a soft collapsible flask holding 1 litre and weighing 30 g empty. The threads match Sawyer's squeeze and inline filters, so you fill straight from a stream, screw on the filter, and squeeze dirty water through without decanting into a hard bottle first. Because the bottle rolls flat, it packs down to almost nothing once emptied, which is the main advantage over a rigid Nalgene-style bottle for anyone filtering water on the move. It won't survive being used as a pillow or dragged over sharp rock the way a hard bottle can, and it has no built-in filter of its own - you need a compatible Sawyer filter to use it as intended. Three bottles in one set suit hikers who want to draw and filter multiple litres at a water source in one go rather than making repeat trips.