Hydrapak UltraFlask+ Filter Cap Electronics Strutted vents in the fly

Strutted vents in the fly for excellent air circulation

10T lowest sprocket realized by new FREEHUB body construction

One you’ll always wield

Full-length side zippers

weight 340 g/ pair

Hydrapak UltraFlask+ Filter Cap Electronics Strutted vents in the flyRun fast, filter faster. The UltraFlask+ Filter Cap threads seamless onto all of HydraPaks 42mm running flasks and handhelds for a lightweight, straightforward filtration solution. Featuring a traditional bite valve and cap design, runners can drink freshly filtered water directly through the high flow Blaster valve. FILTER FACT SHEET FILTER USER MANUAL *Effectively removes common waterborne bacteria, such as E. coli (99. 999%) and parasitic cysts