Yosoo Hydration Water Bladder Cleaning Brush Packs Tube Sucker Cleaner Brushes Drying Rack 4-in-1 Cleaner Set for Water Reservoirs Bladders for Camping Cycling Hiking Backpack The item is a cost-effective water bladder cleaner, bracket is made of PP, the wire of brush is PA66, metal is stainless steel. It is also a popular water reservoir cleaner, easy to use and carry around, clean your hydration bladder entirely. 4-piece tool: included Flexible folding bracket, water pipe brush, long brush, small brush. How to use: big brush is used for reservoir bladder cleaning, small brush to clean the bite valve, perfect for mouth piece cleaning, flexible Long spring wire brush to clean th.e tube hose The hydration water bladder cleaning kits would make your outdoor sports fitness safer and more convenient, it provides warranty, a free replacement is available