Overview
Drink-Mix & Electrolyte Ready! Compact, discrete, and ridiculously easy to use — the UltraPress® Covert Edition fits into any pack pocket (or cup holder), requires zero setup, and makes 16.9 ounces of clean purifier water in a blazing fast 10 seconds (3L/min). Stealth on-the-go filtration and purification for the hiker, backpacker, hunter, or global adventurer seeking discretion and fast-flow purified water for drinking, filling hydration reservoirs, or cooking.
- Compact and ridiculously easy-to-use, the UltraPress fits into any pack pocket (or cup holder), requires zero setup, and makes clean purified drinking water in 10 seconds (3L/min).
- Award winning OnePress® global protection is effective on all 7 continents and empowers adventurers and travelers to drink from the world’s sketchiest freshwater sources. Simply — Fill. Press. Drink.®
- Removes waterborne pathogens including virus (e.g. Rotavirus, SARS, Hepatitis A, Norovirus), bacteria (e.g. E. coli, Cholera, Salmonella, Dysentery) and Protozoa (e.g. Giardia, Cryptosporidium, Amoebae).
- Ultra-powdered activated carbon filters particulates (sediment, microplastics) and adsorbs many chemicals, pesticides, herbicides, heavy metals, VOCs, flavors and odors.
- Replaceable purifier cartridge rated for 300 cycles (40 gal. / 150L).
- RiverFlow® spout delivers a fast-flow of clean drinking water for chugging, filling hydration reservoirs and other bottles.
- FlipCarry® handle rotates 90° for effortless separation (Inner Press from Outer ReFill) and easy carrying; provides a large pressing surface when flat.
- Multi-functional SimpleVent® drink cap vents air (by twisting cap ½ turn) during purification and filtration; protects spout from cross-contamination.
- SoftPress® ergonomic comfort pad (on drink cap) provides for non-slip, anti-fatigued pressing.
- TPE TopoGrip® placed on all heavy use surfaces for tactile, non-slip performance and durability.
- Capacity: 16.9 fl oz (500 ml)
- Weight: 12.5 oz (354 g)
- Height: 9.75" (24.77 cm)
- Diameter (at base): 2.95” (7.5 cm)
- Active Technology: Electroadsorption and ultra-powdered activated carbon.
- Fast-Flow Rate: 10 seconds per 16.9 fl oz (3 liters/minute)
- Removes: Waterborne pathogens (99.99% of viruses, 99.9999% of bacteria, 99.9% of protozoan cysts), including Rotavirus, Hepatitis A, Norovirus, Giardiasis, Cryptosporidium, E. Coli, Cholera, Salmonella, Dysentery and more.
- Filters: Particulates (sediment, microplastics) and ultra-powdered activated carbon adsorbs many chemicals (including PFAS & VOCs), pesticides, herbicides, heavy metals, flavors and odors.
- Durability: built tough to perform in harsh conditions and withstands 10 ft drops (full of water) onto concrete.
- Cartridge Lifespan: 300 presses (150L/40 gal), as “press time” reaches ~25 seconds (or three years have elapsed since first use) it’s time to replace your purifier cartridge.
- Cartridge Shelf Life: Stored under proper conditions, an unopened Purifier Cartridge has a shelf life of 10 years. After a cartridge has been used, it lasts at least 3 additional years.
- Materials: Made from BPA-FREE polypropylene #5, food-grade silicone, TPE and ABS food-grade plastic.
- Testing Standards: Independently tested by a certified laboratory to meet or exceed NSF/ANSI protocols 42 and 53 for sediment, pathogen and chemical removal; meets the EPA Guide Standard and Protocol for testing microbiological water purifiers.
- Designed in USA. Cartridge media made in USA. Purifier bottle made in China.
- Grayl® purifier bottles are accompanied by a ten (10) year warranty covering workmanship and materials. We stand behind everything we sell. If you have a problem with your Grayl product, please reach out through customer support or LIVE CHAT.
- Replacement bottle parts and replacement cartridges are available for purchase on our website.
- Click here for online an online visual Quick Start Guide guide with step-by-step videos that contain the nuts and bolts for quickly getting up to speed with the UltraPress® Filter & Purifier Bottle.
FILL. PRESS. DRINK. ONE-PRESS. 10 SECONDS.
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.
01 ROTATE & PULL APART
Grasp the Inner Press with one hand and the Outer Cup with the other, then pull apart. A quick twist helps to initiate separation.
02 FILL WITH DIRTY WATER
Fill from a stream or lake, or from any bathroom sink or rustic hostel tap.
03 VENT & PRESS
Twist the SimpleVent® cap 1/2 turn to allow air to vent during purification process. Utilizing your body weight, press with steady downward force.
04 DRINK PURIFIED WATER
Fast and easy; makes safe drinking water in 8 seconds - anywhere!
ONE-WAY VALVE.
ELECTROLYTE AND
DRINK-MIX READY
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
LIGHTWEIGHT KIT.
CARRY EMPTY.
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
COMPACT
FOR EVERY
ACTIVITY.
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®.
DRINK CAP
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.
INNER PRESS
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.
OUTER CUP
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.
QUICKSTART GUIDES
QUICKSTART GUIDES
Need to know more? Get to know the GeoPress® Purifier with our Quickstart Guides.
Looking for a larger capacity bottle?
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FAQs
An UltraPress cartridge is rated for ~300 cycles (150 liters / 40 gallons); GeoPress cartridge for ~350 (250 liters / 65 gallons). The effective lifespan of a cartridge varies depending on the quality of the water sources—the clearer, the better. High levels of silt or sediment will shorten the lifespan of a cartridge. To maximize the effective lifespan of your cartridge always choose the clearest water available. If necessary, pre-filter the water using a handkerchief or t-shirt as you fill the Outer Cup.
As you use your Grayl purifier, the ‘press time’ will slowly increase with use. When ‘press time’ reaches ~25 seconds (or three years have elapsed since first use), it is time to replace your cartridge. Note: Especially cold water may take longer to press and does not indicate your cartridge needs to be replaced.
Stored under proper conditions, an unused (and airtight) cartridge has a shelf life of 10-years. Once a cartridge has been opened, it may be used for up to 3-years or until press time reaches ~25 seconds, indicating it is time to replace the cartridge.
Stored under proper conditions, an unused (and airtight) cartridge has a shelf life of 10-years. Once a cartridge has been opened, it may be used for up to 3-years or until press time reaches ~25 seconds, indicating it is time to replace the cartridge.
Inside the purifier cartridge, non-woven ceramic fibers block and trap microorganisms and particulates with a very high electropositive charge, removing submicron contaminants through electroadsorption. Ultra-powdered activated carbon adsorbs chemicals, heavy metals, bad flavors and odors.
Inside the purifier cartridge, non-woven ceramic fibers block and trap microorganisms and particulates with a very high electropositive charge, removing submicron contaminants through electroadsorption. Ultra-powdered activated carbon adsorbs chemicals, heavy metals, bad flavors and odors.
Inside the purifier cartridge, non-woven ceramic fibers block and trap microorganisms and particulates with a very high electropositive charge, removing submicron contaminants through electroadsorption. Ultra-powdered activated carbon adsorbs chemicals, heavy metals, bad flavors and odors.
Yes, you may add electrolytes, drink mixes and other flavorings into your UltraPress® when it has a One-Way Electrolyte & Drink-Mix Valve installed.
For bottles without a One-Way Valve installed, we recommend NOT adding flavoring or electrolytes directly into your UltraPress® because it can decrease the lifespan and efficacy of your cartridge. Instead, we recommend you pour your clean drinking water from your Grayl into another water vessel containing electrolytes or flavorings.
Yes, you may add electrolytes, drink mixes and other flavorings into your UltraPress® when it has a One-Way Electrolyte & Drink-Mix Valve installed.
For bottles without a One-Way Valve installed, we recommend NOT adding flavoring or electrolytes directly into your UltraPress® because it can decrease the lifespan and efficacy of your cartridge. Instead, we recommend you pour your clean drinking water from your Grayl into another water vessel containing electrolytes or flavorings.
Grayl products are made from: BPA-free polypropylene #5, food-grade silicone & ABS thermoplastic polymer. Purifiers are designed in Seattle, Washington, the purification media is produced in the United States and the bottle components by our manufacturing partners in China.