There's nothing worse than running out of clean drinking water when you're in the outdoors. The Ninety9 Pure Filtered Hydration Bladder solves that problem. Simply fill the bladder with any water source you come across in the outdoors and use the filter + straw attachment to drink it safely. The Ninety9 Pure Filter uses a two-stage, high-precision, ultra-filtration system to protect against 99.999% of bacteria, parasites and micro-plastics. It also removes particulates, chemicals and heavy metals to improve water taste, allowing you to have safe, clean drinking water from the convenience of your pack, or back pocket. If you spend time in the outdoors, you've probably wondered about the safety of some of the natural water sources you came across, such as streams, lakes, mountain tarns, and even questionable water tanks at more remote DOC huts. The Ninety9 Pure Filter turns questionable water into safe drinking water, ensuring you stay hydrated without having to carry excess water. The water purifier is engineered to filter up to 1000L of water (depending on water quality). It can also be back-washed to increase its lifespan. Note: You can use the filter + straw without the bladder to drink directly from the water source, or use the bottle attachment. Three ways to use the filter:1. Direct suction, using a straw connection to the filter2. Connect the filter to a water bottle3. Connect the filter to the bladder tube