• Water bottle with Level-2 filter derived from NASA technology.
• Filter produces superiorly-efficient filtration with a powerful flow.
• Taste, odor and BPA-free bottle.
• 100-gallon filter capacity; bottle is dishwasher safe.
• O-ring carabineer used to carry or hook the bottle onto a bag.

OKO H2O Level-2 Advanced Filtration Water Bottle ------------------------------------------------ OKO's advanced filtration water bottle is made of a customized blend of food grade plastics. The materials have passed stringent SGS testing for FDA food contact safety. It is also free of odor and taste. The cap is translucent so you can see the water as it filters. The bottle is soft and squeezable and perfectly balanced with water inside. OKO uses Level-2 filtration originally developed through a NASA grant for space stations. Simply put, it is the state-of-the-art in water filtration technology. The filter produces superiorly-efficient filtration with a powerful flow. Our patent-pending Upstream Valve returns any backwashed fluid into the "unfiltered" water area for re-filtration and to ensure that every sip is pure, fresh and clean. OKO bottles are dishwasher safe and easy to clean. Three sizes of bottlesThree sizes of bottles -- 550 ml, 650 ml, and 1 liter View larger Choose your favorite filter colorChoose your favorite filter color View larger Top-Grade Construction ---------------------- OKO’s patented water bottles are made from a customized blend of plastics that have passed stringent SGS testing for FDA food contact safety. The bottle cap is made of Tritan, a BPA-free clear hard plastic renowned for its durability and clarity that allows the user to see water filtration in action as you drink. The bottle’s body is made of an ultra-light polypropylene material used popularly in food storage containers worldwide. Our semi-soft nozzle and washer create functional accents and the contoured shape makes the bottle easy to grip. The O-ring carabineer is used to carry or hook the bottle onto a bag. These features, combined with the versatility provided by your filtration make OKO the best water bottle in its category. OKO bottles are dishwasher safe and easy to clean. OKO Level-2 Filter ------------------ OKO Level-2 filtration, originally developed through a NASA grant for space stations, is now available for consumer use. In addition to a 2 micron pore size, the material utilizes a positively charged electro-adsorption (attraction and retention) process to draw and trap harmful agents much smaller than its pore size. Charge fields, activated upon water contact extend 1 micron each to virtually close the pore to any intruding agents. Using built-in silver ions, the material then kills bacteria upon contact. OKO level-2 filter lab tests reflect removal of 99.94% of e-coli, 99.997% of cryptosporidium and 99.9999% of giardia lamblia, the most commonly found bacteria in water sources. Up to 100 Gallons of Refills ---------------------------- The lifespan of your filter greatly depends on the quality of the water you filter through it. The more contaminated the water, the shorter the life of the filter. We suggest you change it every 50 gallons for best tasting water but it should be fine for up to 100 gallons. 550ml bottle: Based on 100 gallons of mostly tap water, you will get 750 refills. 650ml bottle: Based on 100 gallons of mostly tap water, you will get 580 refills. 1000ml bottle: Based on 100 gallons of mostly tap water, you will get 375 refills. A wide variety of usesA wide variety of uses Get to Know OKO --------------- Pronounced “ooko,” OKO means “eco” in Swiss German, where the idea for our advanced filtration water bottle and its application was originated. OKO takes the concept of an ecologically friendly water container one step further with NASA derived filtration technology, packaged in smartly designed BPA free water bottles with a super-light, high tech blend of materials -- ensuring that you’re always drinking safe, pure, potable water in style. It’s the ideal choice for everyday use, travelers, adventurers, hikers, yogis, runners, and anyone who needs convenient access to clean, clear, crisp water. And with three sizes, six designer colors, and two levels of filters, it’s easy to find the OKO bottle that’s right for you. Key Features ------------ * Made of a customized blend of food grade plastics * 100% BPA, phthalate, and toxin free * Soft, squeezable, and perfectly balanced with water inside * Filters up to 100 gallons of water before needing to be replaced * Measures 8.25 x 3.3 x 3 inches * Dishwasher safe