Hydrapak Ultraflask Filter Cap injury prevention personal care & first aid With the most storage space

With the most storage space amongst UD's running vests

Combined with our PointZero outer-layer

its lightness and its ingenuity

close fit that makes you want to push the pace

Hydrapak Ultraflask Filter Cap injury prevention personal care & first aid With the most storage spaceRun 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. The integrated filter removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from approximately 1,500