This collapsible SoftFlask carries 500mL 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. Perfect to combine with the 300mL SoftFlask to carry more fluid or electrolytes if needed. Features a silicone Sheath Bite Valve.
 
This collapsible SoftFlask carries 500mL of fluid. PVC & BPA free.