Unique Design: The H20 filtration system is specifically designed to fit the OKO Water Bottles hence these are designed in a vibrant hue to suit your hydration system. Premium Construction: The water purifying filter has been constructed with state-of-the-art water filtration technology using the finest materials. It ensures efficient performance in all weather conditions. Convenient Filtration: The lightweight water filter utilizes an electro-absorption procedure to clean the water while retaining negative particles. The lab-tested OKO filter. Lasting Performance: The OKO water bottle filter can clean up to 100 gallons of water and efficiently removes 99.999% of giardia lamblia & 99.997% of cryptosporidium. Product Specifications: The removable water filter comes in an eye-catching red hue. Available in blue and yellow colour variant, it can easily fit in your OKO portable water bottle. The OKO H20 Filter is designed to fit your OKO water bottles so you can get safe and convenient access to clean water in any part of the world. Whether you plan to go on a long camping trip or an adventurous voyage across the country, the water including 99.999% of giardia lamblia & 99.997% of cryptosporidium. Originally designed for use in NASA ISS (International Space Station), this water filtration system can clean up to 100 gallons of water, retain negative particles, remove odour, and make it safe to drink and use