This collapsible SoftFlask, produced by HydraPak™,carries 625 mL of fluid and is engineered for long-distance performance. The updated 28mm locking cap prevents leaks while maintaining a low-profile silhouette that reduces body contact when used in a race vest or waist pack. Its flexible shape allows the SoftFlask to slide easily in and out of waist pack or vest pockets, making it an ideal companion for streamlined, fast-moving setups