Ultraspire 500ml Soft Flask Straw Bite Valve Handheld
This is a collapsible SoftFlask that 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 in and keep fluids cool. Features a silicone Sheath Bite Valve. This flask gives me lots of ideas!