Great for on-the-go water filtration, the ultra-lightweight Peak Solo removes 99.999999% of bacteria, 99.999% of parasites, and 99.999% of microplastics. Standard 28mm threading allows the filter to be screwed onto most common water bottles. Drink the filtered water directly from the Peak Solo’s mouthpiece, or dispense the water into another container. Fill up a 1-liter bottle in just 20 seconds. Made with premium 50% post-consumer recycled BPA-free plastic. Includes Peak Solo and backwash syringe. Meets US EPA and NSF P231 drinking water standards for the removal of bacteria and parasites.