Grayl Ultralight

Purify and filter water in areas with suspect drinking water. Can also be used as an everyday water bottle.


$60 (Replacement purifiers $24)

Technical Details

Dimensions/ Weight

9.6 x 2.8 x 2.8 in / 10.9oz

Bottle Capacity

500 ml (16 oz)

Filter Specs

electro absorption and activated carbon filter, which removes viruses, bacteria, protozoa, sediment, heavy metals, and particulates

Cartridge Life/ Replaceable?

300 uses/yes


  • Compact
  • Durable
  • Filters and purifier
  • Sleek design


  • Small capacity (up to 16oz at a time)
  • Relatively short cartridge lifespan

Why We Like It

Staying hydrated while traveling is essential for maintaining your health. Drinking contaminated water is a quick way to sabotage your health and ruin your trip. Bottled water is a surefire way to avoid drinking contaminated water, however it's also a quick way to burn through a budget (not to mention contribute to the ever-growing Pacific garbage patch). Fortunately, the Grayl Ultralight offers a solution. The compact design conserves pack space and is easy-to-use. What's more, it both purifies AND filters water; other similarly-priced systems will only do one or the other. That means it will remove both larger particulates and microorganisms such as viruses and bacteria. I used it while hiking the Salkantay Trail in Peru with no problems at all.

Tip: Because the Grayl is only able to purify up to 16oz at a time, I would recommend bringing an additional water bottle to fill up. The Vapur Element is a great option for conserving pack space. Also, if your trip is longer than a month I would recommend bringing replacement purifying cartridges along.

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