With so many effective ultralight water treatment options available, it’s hard to recommend heavy filter systems anymore. However, we still see a use case for gravity filters – the need to filter large volumes of water with the least amount of effort. The problem with most gravity filters is that they’re slow, clog easily, and become damaged when they freeze. The Rapid Pure Trailblazer Gravity Filter solves all of these issues. It’s so fast, and so effective, that the added weight of this system is well worth the performance of being able to deliver several liters of water in just a few minutes when traveling as a group and sharing gear.