The Chill-Its 5159 Hydration Pack Cleaning Kit is designed for complete hydration system maintenance, helping keep water fresh and cleaner after repeated use. The kit includes a large brush that reaches deep corners of the bladder for thorough cleanup of buildup and residue. A small brush is included for precise mouthpiece care, fitting into the twist valve. The long, flexible brush makes it easy to clean the tube, preventing buildup and keeping water flowing smoothly. An expand