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Grayl Ultralight Water Purifier Bottle


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    23 Reviews


    From Thailand to the Appalachian Trail.

    With its lightweight, food-grade plastic construction and one press purification system, the Grayl Ultralight Water Purifier Bottle offers itself up as an easy-to-use alternative to cumbersome purification systems as you travel or hike. This bottle boasts an electro absorption and activated carbon filter, which removes viruses, bacteria, protozoa, sediment, heavy metals, and particulates. Additionally, the filter processes up to 2-liters per minute, while the convenient 16-ounce size makes it easy to slip into a water bottle pocket, or attach it to your pack with a carabiner. So, all you have to do is fill it up with water, press down the filter as you would your French press, and drink.

    • An easy-to-use purifier for travel or backpacking
    • Electro absorption and activated carbon filter offers clean water
    • Press purification system processes 2L per minute
    • Removes viruses, bacteria, protozoa, sediment, heavy metals, and particulates
    • Filter is replaceable after 300 uses
    • Boasts a carabiner loop to attach to backpack
    • Item #GYL000H

    Tech Specs

    polypropylene, food-grade silicone, ABS food-grade plastic
    Purifying Element
    electro absorption, activated carbon, silver treated zeolites
    protozoa, bacteria, viruses, sediment, chemicals, heavy metals
    Cartridge Life
    300 times
    16 oz
    [per minute] 2 L
    9.6 x 2.8 x 2.8 in
    Claimed Weight
    10.9 oz
    Recommended Use
    backpacking, camping, travel
    Manufacturer Warranty
    10 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Convenient backpacking buddy

    • Familiarity: I've used it several times

    -You can drink right out of the bottle
    -It conveniently clips to the outside of your pack
    -The weight is hardly noticeable
    -It filters both sediment and microscopic contaminants

    - It only filters a personal serving of water at a time
    -The method used for forcing the water through the filter causes the need for an immense pressure to be put on the rim of the bottle. This is supposed to be done by hand, which presses the rim into the palm rather painfully. The tech I discovered, instead of pressing with my hands, or using a rock or other heavy object, is simply sitting on the bottle to force the water through. When placed in the right position on the bum cheek, it actually creates a rather comfortable sitting position you can sit in to wait for the water to be pushed through. Make sure your pant seat is clean though!

    Great for Boaters and world travelers

    • Familiarity: I've used it several times

    Having logged a couple of thousand miles on trails and water over the last year or two, I’ve certainly had my fill (pun intended) of water purifiers and the plethora of different brands on the market. The GRAYL Ultralight Purifier Bottle hits the nail on the head and truly is a one-stop shop! Whether on the trail in a remote section of the Smoky Mountains or paddling Class V whitewater on your local steeps, The GRAYL gets the job done right on time! It’s a little heavy for quick outdoor pursuits, but most everything else this should fit right in your arsenal! See my full review here.

    International Travelers Delight

    • Familiarity: I've used it several times

    Do you hate buying water bottles when you travel abroad? Then pick up one of these guys. They are the easiest and least cumbersome way to remove viruses from a water source. Now when you are at a restaurant instead of having to ask for bottled water pull this guy out and you are good to go. This filter is a bit heavy for backpacking but works wonderfully as an addition to your international travelers kit. If you have any questions feel free to reach out to me via the listed information above.

    Works wells, hard to push

    • Familiarity: I've used it several times

    I bought this for a trip to India. I wanted a water purification system that not only killed the bad stuff but also actually filtered the water. I read many reviews and despite the common thread of it being hard to push down, I decided to purchase it anyways. I think the more you use the filter the harder it becomes to press down. It works well and I drank sketchy water (obviously filtered) and was totally fine. You really don’t want to store it wet which is difficult when you’re constantly on the go. Overall, it does a great job filtering dicey water but it’s just kinda inconvenient. Definitely will continue to use but not going to lie, I ended up buying more bottled water than I wanted to.

    Great for Travel

      I was a little unsure of these after reading reviews and it sounding like you needed extreme force to push the water through, but was very happy once I tried it. It’s easily done with the bottle on the ground or hard surface. It doesn’t filter a ton of water, so I used it to filter and then dumped the water into other water bottles. I don’t think this would be ideal in a lot of backcountry situations, but it is great for traveling in developing countries where the water isn’t safe. Definitely recommend.

      Great for Hiking and personal hydration

      • Familiarity: I've used it once or twice and have initial impressions

      I like this water bottle. First impression of the water bottle is that is doesn't hold as much water as expected. Still works great.I would recommend this for hiking a personal trips. If you are needing to filer larger quantities of water then this might not be enough. I got this bottle for backpacking trips and traveling to foreign countries. Avoid contaminating the lip of the bottle with unfiltered water since you do have to remove the lid to push down. You do have to use a bit of force to push down, but it wasn't as bad as I thought. I would recommend this for backpacking essentials

      Day trips and backup, YES!

      • Familiarity: I've used it several times

      The concept of this bottle is wonderful. Having your water bottle and filter in one effectively decreases the amount of gear you lug around. This has accompanied me on many long day hikes where the 2 liters in my water reservoir wasn't going to cut it but I also didn't want to carry my filter up.

      I would not recommend this for over night backpacking trips as it only filters 16oz at a time. Although the filter could handle 2 liters per minute the process of filling, pushing, and emptying the canister will take longer.

      Does the job

      • Familiarity: I've used it several times

      Overall I'm not really impressed by the Grayl. I do like that it pulls out Chlorine and a lot of the Fluoride in the city water but it is extremely difficult to push down. Also, the lid has to be off in order to push it down and you end up putting your hands on the lip of the water bottle. I think the idea they have going is great but some improvements could definatly could be made. If you are not in the city and don't need to get rid of the Chlorine or Fluoride then I would recommend something that is easier to use such as the Lifestraw.

      My new favorite

      • Familiarity: I've used it several times

      The Grayl Ultralight Water Purifier Bottle is my new favorite water filter/purifier. I love this easy and convenient. I use it backpacking and on bike rides.

      Loved so much it was stolen!!

      • Familiarity: I gave it as a gift but have feedback to share

      I bought my daughter this and she took it to a research convention and it was gone. I had to buy another one because she cant live without it :)

      Daughter loves this!!!!

      • Familiarity: I gave it as a gift but have feedback to share

      Bought this for my daughter for when she goes hiking,camping and caving. Shes currently going to school to be a biologist and hikes often doing research. Loves that its lightweight.


      • Familiarity: I've used it once or twice and have initial impressions

      What a great invention. For full disclosure, I haven't actually used this, but I'm heading down to Peru and I'm stoked to be able to get quick drinks out of the sink or the stream. The construction looks solid, and it filters fairly quickly. I'll give a more thorough review once I've determined I won't be developing typhoid.

      New Favorite Bottle

      • Familiarity: I've put it through the wringer

      I have backpacked and hunted with the same Nalgene bottles for over 20 years and never thought about it. With the introduction of the Grayl filter bottle....things have changed. Instantly purify drinking water and have a container to carry it it? YES PLEASE!!!


      • Familiarity: I've used it several times

      Picked this up for a recent trip to China. It worked great for places where I was sketched about the water... I never had any "problems". This version is a lot lighter weight and the filter lasts longer than the previous one I had, which is nice. And it fit in my bag nicely. I also plan on using this for day hikes and maybe even backpacking trips.

      A Bottle of Purity

      • Familiarity: I've used it several times

      I have tried a variety of water purifiers through-out my time exploring and experiencing nature, with this design being my favorite water purifier. The push filtration system is quite easy; you just put it on a hard surface and press the top down, with the bottle sliding down and forcing the water through the filter itself. The filter is a great quality and purifies bacteria, viruses, chemicals, and sediment which is key. It is the size of a normal water bottle and does allow you to store the purified water in the bottle, but that does add a bit of weight to it. I paired it with a collapsible water bottle for easy storage of the purified water. Over-all this is one of my favorite water filters I have ever used, and it has now become my main water filter.

      A Bottle of Purity