Run fast, filter faster. The UltraFlask+ 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

• FAST & 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.*
  
  
• SECURE GRIP:
  A flexible and structured grip makes it easy to hold the flask while screwing and unscrewing the filter.
  
  
• VEST PACK FIT:
  Soft material conforms to most hydration packs and larger vest pockets for a secure and stable fit.
  
  
• HIGH-FLOW:
  Easy to drink bite valve auto-seals after each sip, eliminating annoying drips.
  
• LARGE OPENING:
  42mm opening lets you fill the flask easily at any water source.
  
  
• COMPRESSIBLE:
  Flexible design shrinks as you drink, minimizing water movement.
  
  
• INCLUDED BACKFLUSH ADAPTER:
  Plugs into filter valve and threads onto a HydraPak Stow or bottle of clean water for backflushing the filter to restore its flow rate.

*Effectively removes common waterborne bacteria, such as E.coli (99.999%) and parasitic cysts (99.9999%) per HSF 42.

Specifications

• Weight: 36 g / 1.3 oz
• Dimensions: 42mm
• Material: ABS, POM, Silicone, Hollow Fiber
• Care: 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.