Carry light, drink right - The Ultraflask+ will be your go-to flask for long-distance running when you have access to water sources along the way. The added filtration system is light and compact, and it screws on top so you can drink right from the flask. Or, if you’re carrying more water, use the system to fill a bottle or reservoir.

Features

• Includes Backflush Adaptor: Plugs into filter valve and threads onto a HydraPak Stow or bottle of clean water for backflushing the filter to restore its flow rate.

• Vest Pack Fit: Soft material conforms to most hydration packs and larger vest pockets for a secure and stable fit.

• The integrated filter removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from approximately 1,500 litres of water at a rate of >1L per minute.*
  
• 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.
  
• Easy to drink, bite valve auto-seals after each sip, eliminating annoying drips.

Specification

• Filter Weight: 36 g / 1.3 oz
  
• Filter Dimensions: 42mm
  
• Capacity: 500 ml
  
• Weight: 65 g / 2.3 oz
  
• Dimensions: 240 mm x 70 mm / 9.4 in x 2.8 in
  
• Material: TPU, Silicone POM, Hollow Fiber, ABS
  
• 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.