Achieve optimal hydration even in the great outdoors with the GRAYL Ultralight Portable Water Purifier. This innovative water bottle is complete with a built-in filter to give you the water your body needs. The GRAYL Ultralight works very similarly to a French press. TO use, simply fill the vessel with water from any source. Then, press the unit down. This forces the water through the filter. Then, enjoy your water. Without the need for sucking, squeezing, pumping or specialty lights, the GRAYL Ultralight works efficiently. There’s no wait time to getting the hydration you need. Perfect for those who love exploring the great outdoors, the GRAYL Ultralight removes anything harmful. This includes 99.999% of viruses, bacteria, and protozoan cysts. Of course, this means your water ends up tasting great so you can enjoy every last sip.