Clean water is essential for survival. Whether deep in the mountains chasing elk or miles from camp on a backcountry hike, you need a fast, reliable way to filter water. That&';s why Montana Knife Company teamed up with Grayl-the leader in portable filtration-to bring you the MKC x Grayl GeoPress Ti. WE PUT THE SAME THOUGHT AND EFFORT INTO OUR ACCESSORIES AS WE DO OUR KNIVES. Black Titanium PVD high-performance coating withstands abrasion, corrosion, drops, fire and reduces friction while pressing. Meticulously crafted from CP4 Grade 1 Titanium offers an unparalleled strength to weight ratio. Laser-etched branding in signature gold. Award-winning OnePressA(R) global filtration and purification is effective for use on all 7 continents and empowers travelers, adventurers and survivalists to make the world&';s sketchiest freshwater sources clean. Unrivaled ease, speed and versatility - simply Fill. Press. Drink.A(R) Paracord D-ring loop for filling in precarious situations (foot bridges, whitewater, canyoneering, etc). Heat it up! Utilizing the butterfly handles, the Outer Ti Cup can be used to heat water and cook food alongside hot coals or near a direct flame. Can also be used with the Grayl titanium camp stove. One-way silicone valve, drink-mix ready! A one-way valve (pre-installed in cartridge) allows electrolytes, or a sport drink mix to be added to your bottle without compromising the integrity of the filter cartridge media. Also enables use of any other potable beverage with your Grayl (fill from topside of bottle). Removes waterborne pathogens (virus, bacteria, protozoan cysts), including Rotavirus, Hepatitis A, Norovirus, Giardiasis, Cryptosporidium, E. Coli, Cholera, Salmonella, Dysentery and more. Filters particulates (sediment, microplastics). Ultra-powdered activated carbon adsorbs many chemicals (including PFAS & VOCs), pesticides, herbicides, heavy metals, flavors and odors. Virtually no setup time and industry-leading "fastest" flow rate (5 liters per minute). Filters and purifies in a blazing fast 8 seconds. Multi-functional SimpleVentA(R) Drink Cap. Twist the cap 1/2 turn to vent air during filtration and purification process; protects spout from cross-contamination. A wide contoured spout delivers a fast flow of water for chugging, filling hydration reservoirs and other bottles. SoftPressA(R) Pads. Comfortable TopoGripA(R) pressing pads provide for an ergonomic, non-slip pressing surface. 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. 10-Year Warranty: Accompanied by a ten (10) year warranty covering workmanship and materials covered by Grayl. If you have a problem with your product, please reach out to them through customer support or LIVE CHAT. **MKC cannot accept returns on used items.