Virtually no setup time, and fast performance, UltraPress® purifies and filters contaminated water in 10 seconds (3 liters per minute) from any water source. From adventure travel to survival make the world’s sketchiest freshwater sources clean to drink from.
Grasp the Inner Press with one hand and the Outer Cup with the other, then pull apart. A quick twist helps to initiate separation.
Fill from a stream or lake, or from any bathroom sink or rustic hostel tap.
Twist the SimpleVent® cap 1/2 turn to allow air to vent during purification process. Utilizing your body weight, press with steady downward force.
Fast and easy; makes safe drinking water in 8 seconds - anywhere!
The silicone One-Way Valve prevents liquid from reversing direction and flowing back into the filter Cartridge. Allowing the use of electrolytes, drink mixes, and other beverages with your Grayl UltraPress® Filter & Purifier Bottle.
ADD AN EXTRA CARTRIDGE AND VALVEBy Clicking the Link
Bring the UltraPress® along for the ride as your empty lightweight vessel. There is no need to carry along a bottle thats heavy and filled to the top. Just Fill. Press. Drink. and be on your way with your empty Grayl.
SHOP BOTTLELOCK HIP PACKSBy Clicking the Link
This reliable all-day companion is designed to keep up with your active lifestyle, fitting effortlessly into any pack pocket with its compact 16.9 fluid ounce size. Stay hydrated on the go with each river fill-up, and savor the taste of the water at your feet with UltraPress®.
RiverFlow® Spout
A wide contoured spout delivers a fast flow of water.
SimpleVent®
Twist the cap 1/2 turn to vent air during purification process.
SoftPress®
Comfortable pressing pad provides for an ergonomic, non-slip large pressing surface.
FlipCarry®
Rotates 90° allowing for easy carry and effortless separation of Inner Press from Outer Cup.
16.9 fl oz (500 ml) of clean, filtered and purified water. NOTE: Dirty water never enters the Inner Press.
Filters & purifies 10 seconds per 16.9 fl oz (3 liters/minute).300 presses (150L/40 gal)
Removes viruses plus bacteria and protozoa. Improves taste, smell and clarity. Filters microplastics, PFAS, and lead.
TopoGrip® Surfaces
Durable, tactile non-slip grip material placed on all heavy use surfaces.
Max Fill Line
A maximum fill line is located on the backside of the Outer Cup. 16.9oz (500ml).
Non-Slip Base
Soft, non-slip base provides durable protection.
To maximize the lifespan of a cartridge, always choose the clearest water. GeoPress® cartridges deliver ~350 cycles (250 liters / 65 gallons) while UltraPress® offer ~300 cycles (150 liters / 40 gallons). Water quality matters; avoid silt and sediment. Preemptively filter out silt and sediment with a handkerchief or t-shirt to extend the life of a cartridge.
The time it takes to press with your GeoPress® or UltraPress® will gradually increase over time. We recommend replacing the cartridge once the 'press time' reaches approximately 25 seconds (or three years have passed since the first use). Please note that colder water may require longer pressing time and does not necessarily mean the cartridge needs to be replaced.
An unused and airtight cartridge can be stored for up to 10 years. Once opened, use it for 3 years or until press time is ~25 seconds.
GeoPress® and UltraPress® cartridges filter and purify most freshwater sources. Avoid using them with salty or brackish water. When treating freshwater, start with the cleanest water available, such as streams and rivers.
Grayl's activated carbon effectively adsorbs many chemicals, pesticides, herbicides, heavy metals, etc. However, it is not designed for industrial disasters, coal ash spills, high lead levels, mercury, nuclear disasters, high tannin concentrations, or water with toxic blue-green algae (e.g. cyanobacteria). Find another water source in those situations.
Grayl® cartridges contains non-woven ceramic fibers that have a high electropositive charge. These fibers effectively block and trap microorganisms and particulates, ensuring that submicron contaminants are removed through electroadsorption. Additionally, the cartridge is equipped with ultra-powdered activated carbon, which efficiently adsorbs chemicals, heavy metals, bad flavors, and odors.
To avoid contamination, use the Spout Cap. If dirty water comes in contact with the Inner Press, wash the Grayl (not the cartridge) with soapy water and rinse thoroughly. Alternatively, dilute contaminants by pressing and agitating water through a GeoPress® or UltraPress® purifier bottle 5-7 times.
Proper maintenance for your GeoPress® or UltraPress® is crucial for optimal performance. After your adventures, ensure to follow these simple steps to keep your purifier in top shape. Start with a 'dry press' by pressing the wet purifier into the empty Outer Cup and disposing of excess water. Next, remove the cartridge and allow it to air-dry for 2-4 days. For the remaining components, hand wash them with warm, soapy water and let them air-dry. To maximize the lifespan of the cartridge, store the unit assembled. With proper care, the cartridge can last up to three years.
Yes, experience the hydration benefits of electrolyte-infused water in a UltraPress® or GeoPress® when equipped with a One-Way Electrolyte & Drink-Mix Valve (available since April 2023).
Always add electrolytes into the clean drinking water side. Avoid adding flavoring or electrolytes directly into a cartridge not equipped with a One-Way Drink Mix Valve, as it can diminish the cartridge's lifespan and efficacy. In those situations, pour the clean drinking water into another water vessel and then add electrolytes or flavorings.
Size, capacity and weight! Both models offer the highest level of protection from waterborne pathogens (99.99% of virus, 99.9999% of bacteria, and 99.9% of protozoan cysts, including Rotavirus, Hepatitis A, Norovirus, Giardiasis, Cryptosporidium, E. Coli, Cholera, Salmonella, Dysentery). They also filter many heavy metals, chemicals, and microplastics.
GeoPress® filters and purifies 24 oz of water, ideal for individuals and groups looking for a high capacity. UltraPress® purifies 16.9 oz and is great for individuals with limited space or when traveling with small pack side pockets.
An UltraPress® is constructed from: BPA-free polypropylene #5, food-grade silicone, TPE and ABS food-grade plastic. The country of origin for the UltraPress bottle is China. The country of origin for the cartridge is the United States.
Overall rating: 4.759571 / 5 from 653 reviews.
The 16.9oz UltraPress® Purifier - Covert is highly praised for its perfect size, great taste, and sleek design. Customers appreciate its effectiveness as a water purifier, the convenience of its one-way valve, and the quality of its Grayl Filter.
Review topics: [size, fit, model, issues, weight, bag, improvement, experience, color, quality, performance, price, design, functionality, looks, support, construction, customer service, volume, service, build, technology, strength, feels, husband, replacement, capacity, works, pack, water].
"I had previously used the bottle on a trip and it worked well, however on my 2nd trip I noticed the water was leaking out from the side instead of getting pushed through the filter. Tried contacting customer service since they promised a '10 year warranty' but it was alot of back and forth without actually solving the problem."
"We use this when we travel anywhere, even domestically, and want to fill water bottles from sink faucet. The water tastes great and has no “chlorine” taste to it like most water does, which is one way I know it’s working! It works well, but does leave a little residual water in the unfiltered canister no matter how much I push down. Not a big deal I just discard it when finished filling bottles. Wish I would have bought a bigger one. Definitely still considering it. Highly recommend."
"Bought a Ultrapress before a 4 week hike in Uzbekistan & Uzbekistan. It got used most days just to be 100% sure of any water I was drinking out of a tap or stream was safe. It did not let me down. Even had a few nice comments about the colour and how useful it was. It came into its on when we did a 3 day Ala-Kul Lake Hike with only mountain water really available, great also being able to use hydration tablets with it as well with the one way drink mix valve fitted. Just need to plan another hike now to put it to through its paces again!"
"I own this product and a few months ago replaced the filter. Since then, it has leaked. I contacted customer support and they wanted a video of the leak but unfortunately, it is slowly seeping through the filter and it isn't really visible in a video. I'm a fly fishing guide and it leaks so much that when I bend over to net fish or do something else, it ends up getting me wet. They apparently are no longer willing to help me since I can't provide a video. I'm not impressed."
"This is my second review because I'm unable to respond to how they responded to the review which was completely inaccurate and false. If they had any desire to help me with the situation, they would have through the 20 back and forth I did with customer service. I purchased this at a local retailer. When it was time for a new filter, after I installed the filter my Grayl started leaking and it hasn't stopped. I reached out to customer service to get some help to try and figure out what was going on and they stopped helping me because I can't provide a video of the leak. The reason is because it's a slow leak and the video doesn't show anything because it's seeping through the filter to the outside. They say this might be normal because I may not have some sort of valve but I asked Travis with customer service what that was and never got an answer. It never leaked before I changed the filter so I honestly don't think that's the issue. I'm just looking for some help which I have yet to receive."
"always heard grays is the best. . . so iv bought a few to have . . . . and some other products. . . haven't used em yet. . . gotta be able to have clean water. . . so im ready. . ."
"I bought my UltraPress Purifier for overlanding and hiking. But now I also use it at home. I am on a well and my water is “safe” but has a ton of minerals that do not taste good. I have a whole house filtration system and another filter on my spigot. The water still isn’t tasty. I filtered it with the UltraPress Purifier and it is a game changer! It tastes sooo good! You also do not get that weird filter taste. I 10/10 recommend. I not only would recommend it. I already have to all the people on my well."
"Loving it so far! Traveling in parts of Eastern Europe where they say the water is ‘safe’ to drink but why chance it. The Grayl 16oz bottle is the perfect blend of ease of use coupled with small size. In less than ten seconds we can get fresh filtered water from virtually any source without fear of bacteria or other bad things. Very happy with my purchase!"
"Product appears to work as it is supposed to. Have not used it much yet."
"Love the filter redesign and the flip handle. Hate that there isn’t something attaching the cap to the lid. I plan on using these for clients while working as a fishing guide and I’m planning on needing to replace the caps at least every 2-3 outings because they’ll be dropped and lost."
24oz GeoPress® Ti
24oz GeoPress®
16.9oz UltraPress® Purifiers
16.9oz UltraPress® Ti Purifier
Digital Gift Cards
Backpacks
Hip Packs
Bottle Slings
Tote Bags
G-Mods
Packing Cubes
GeoPress® Ti Coffee Press
GeoPress® Ti Cook Lid
GeoPress® Nesting Cup
Titanium Campware
Titanium Stove
Steel Drinkware
Adjustable Bottle Cage
Apparel
Hats
Cartridges
Caps
Inner Press
Outer Cup
Bundle & Save
