Hydrapak Ultraflask Portable Water Bottle 500ml with Filter Kit

The UltraFlask 500ml Filter Kit offers a compact and efficient way to stay hydrated safely, ensuring access to clean water while on the go.

Its flexible and compressible design fits snugly in hydration packs and vest pockets, providing stability and comfort while minimizing bulk as you drink. The 42mm wide opening allows for hassle-free filling at water sources, and the bite valve ensures smooth, drip-free sipping with every use. A secure grip makes it easy to attach and detach the filter, and the included backflush adapter helps restore flow rate for extended usability.

KEY FEATURES

Fast and Safe Filtration

- Removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from up to 1,500 litres of water at a rate of >1L per minute.

Secure Grip

- Flexible structure provides a firm hold for screwing and unscrewing the filter.

Pack-Friendly Fit

- Soft materials conform to most hydration pack and vest pockets for stability and comfort.

High-Flow Valve

- Bite-activated, self-sealing valve eliminates drips for smooth hydration.

Large 42 mm Opening

- Simplifies filling at streams, lakes, or others water sources.

Compressible Design

- Reduces water movement and bulk as the flask empties.

Included Backflush Adapter

- Restores the filter's flow rate using a HydraPak Stow or clean water bottle.

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