This collapsible SoftFlask carries 300ml, 500ml or 800ml of fluid. The unique shape allows this SoftFlask to slide easily in and out of a hydration pocket. Comes with a larger diameter top to fit ice cubes and keep fluids cool. Features a silicone Sheath Bite Valve.
 
Description
This collapsible SoftFlask carries 300ml,  500ml or 800ml of fluid. PVC & BPA free.