The MSR Sweetwater Simplicity MicroFilter Water Purifier Filtration System is a compact and efficient water purification system designed for outdoor enthusiasts. Made by the reputable brand MSR in the United States, this gray-colored purifier system uses advanced microfilter technology to provide clean and safe drinking water on the go. With its simplicity and portability, this filtration system is perfect for camping, hiking, and other outdoor activities where access to clean water may be limited.