Compatible with all Chill-Its Hydration Packs and Replacement Bladders (sold separately). Kit includes separate cleaning brushes for the bladder, tube and bite-valve, as well as a drying rack. • Easy cleaning. • Compatible with Chill-Its hydration packs and replacement bladders (sold separately). • Includes bladder cleaning brush, tube cleaning brush, bite-valve cleaning brush and drying rack. • Drying frame compresses to fit through fill port and expands to fill reservoir for full drying. The Chill-Its 5159 Hydration Pack Bladder Cleaning Kit is compatible with all Chill-Its Hydration Packs and Replacement Bladders (sold separately). Kit includes separate cleaning brushes for the bladder, tube and bite-valve, as well as a drying rack. Bristle Material: Nylon; Bristle Length: 3"; Brush Length: 3"; Handle Length: 12".