Hydrapak Ultraflask+ Filter Cap

Run fast, filter faster. The Ultra Flask+ Filter Cap threads seamless onto all of HydraPak's 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.Features:- Easy To Use- High F... morelow- Lightweight And CompactFast & Safe Filtration:- The integrated filter removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from approximately 1,500 liters of water at a rate of >1L per minute.*Light And Compact:- Minimal design and lightweight materials make this filter the ideal choice for runners. It takes up no extra space when stored or threaded directly onto a flask.High-Flow:- Easy to drink bite valve auto-seals after each sip, eliminating annoying drips.42Mm Thread Compatible:- Easily thread the filter onto some of the most popular running soft flasks, flexible bottles and water storage containers.Included Backflush Adapter:- Plugs into filter valve and threads onto a HydraPak Stow or bottle of clean water for back flushing the filter to restore its flow rate.Specifications:- Weight: 36 g / 1.3 oz- Dimensions: 42mm- Material: ABS, POM, Silicone, Hollow FiberCare:- Avoid freezing filter. Freezing may ruin the hollow fiber membrane. If in freezing conditions we recommend you keep the filter in your pocket or near your body to prevent freezing.