GRAYLUltraPress 16.9 oz Water Purifier & Filter Bottle for Hiking, Backpacking, Survival, Travel (Olive Drab)

This is a great product! I used it for 10 days in Mexico. I easily filtered tap water, avoided travelers diarrhea, and didn’t have to buy & throw away a hundred plastic bottles. Other reviewers said it was hard to push down. Granted, I was not filtering swamp water, but over 10 days of use refilling water bottles for multiple people, multiple times per day, I never had any trouble pressing the water through the filter. Other reviewers also mentioned it overflowing. Yup, it will do that if you fill it above the fill line! This was a perfect size for carrying in my fanny pack. I even like the color!

I took this on a trip out of the country. I was unsure on the availability of clean water and wanted this as security. . I used it when the water didn’t smell good or was cloudy. Worked well and I was able to share clean water with my family. Easy to use and affordable.

I am on my second Ultrapress. My first one lasted about a year and a half and in that time I went through about 3 filter replacements for itWhat I love about this smaller model is it holds 16oz of water, which is a very convenient amount for filling other vessels, like canteens and bottles that are 1 Quart, as it just takes 2 pumps to fill it, with nothing left over. With the Geopress, it would still take 2 pumps. but you would have some amount of water sitting around inside the pump with nowhere to go, since it's 24oz, a somewhat awkward amount.The reason I suspect my first one failed was because the rubber seal around the outside of the fill tank wore down to the point that water from outside cup part during pumping would get past seal and started contaminating the water in the tank. I can't exactly explain how this would be the case, but the reason I believe this is because pumping with my first Ultrapress compared to this new one has almost no resistance, and water starts leaking out of the sides when pumping with the old one, where with the new one the seal is super tight, and no water comes out during pumpingNot sure how this could be fixed in a revised design, perhaps some sort of replaceable rubber seal on the fill tank? I don't claim to be an engineer, but it would be nice if there was some way to design around this one small flaw, to extend the lifetime of these potentially life saving devices.Other than that, it does a great job filtering everything out of water, including bad tastes, my stomach is rather sensitive to algae tastes that even come up in some bottled water, and this pump deals with that no problem.

Bought this for my African Safari. I was nervous about the water in our camps, so better to be safe than sorry! These were easy to use (with a little muscle) and I felt safe drinking the water. You have to press pretty hard on the insert to create the filter - but seems to work great. I am not sure I actually needed these - but they were nice to have.

Used this on a trip to the Mediterranean. Used it when water was questionable, and to have purified water to put into a CPAP I use every night.Never had to dip water out of a stream, fountain, or lake, but took it with me for that reason if needed.Taste was always great.Only issue, is this is a bit heavy on a sling back pack when full, but knew that going in. Check your backpack water bottle pocket size limitation before travel. This size is MUCH more manageable and less weight than the full size variant that I also have.Would like to see GRAYL include a carabiner matched to the package for convenience.Great clean water device and peace of mind. love it.

Purchased for use on a trip to Mexico. Easy to use and good quality.

So used this in Morocco. unfortunately, still had a little bit of an issue when I wasn't paying attention that there was ice in a drink at a restaurant, but up until then this worked nicely so I wasn't always having to buy water and was able to use to filtered water for brushing teeth and such. It is a bit heavy for a water bottle. I often would filter through this and then poor into another thinner lighter water bottle that held more.For those who have a hard time pressing the filter down. Tip: Keep the cap off or at least the top open. Cap off is better. When it gets hard let it sit for a few seconds so water has time to go through the filter and then press the rest of the way down before adding the cap back on.

You have to be very strong to use this water filtration bottle. It takes a lot of effort to squeeze the water through the bottle. It takes a lot of effort to use this item.