Hydrapak

Ultraflask + 500ml Water Bottle With Filter Kit

What Our Gearhead® Experts Are Saying:

"I used the UltraFlask+ on a fastpacking trip through the Uintas and didn’t need to carry a separate filter. It fit perfectly in my vest, the flow rate was solid, and I was able to drink straight from alpine streams with confidence."

When we’re traveling light and covering big miles, simplicity and trust matter most. The UltraFlask+ 500ml Water Bottle with Filter combines our favorite vest-ready soft flask with an integrated water filter, giving us instant access to clean water on the trail. No need for extra gear or extra weight—just fill and go.

The included filter removes common bacteria and protozoa with no pumping or waiting. We drink directly from the flask through the high-flow bite valve, enjoying clean hydration at over 1 liter per minute. With a wide opening for quick fills, a compressible body that collapses as we drink, and a secure fit in most running vests, the UltraFlask+ is the minimalist solution we rely on for ultralight backpacking, racing, and all-day trail adventures.