UltrAspire Soft Flasks

This collapsible SoftFlask with a 42mm cap now comes in 3 sizes, 300mL, 500mL or 800mL. The unique shape allows it 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. PVC & BPA free.