Hydrapak Ultraflask Filter Cap injury prevention personal care & first aid 80% Polyester

80% Polyester

in a meadow in the Cotswolds

OPTIMISED FIT:  A snug fit with a mix of woven stretch and 4-way-stretch Aerotech fabric

29% Elastane

With the most storage space amongst UD's running vests

Hydrapak Ultraflask Filter Cap injury prevention personal care & first aid 80% PolyesterRun 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