Bike it or hike it, the CamelBak Podium Flow 21-oz. 4 Belt Waist Pack is a great hydration and storage solution for the minimalist outdoor enthusiast. In total, the Podium Flow 4 pack offers a total cargo capacity of 4L. Plus, it includes and has a centrally located storage spot for the included Podium 21-oz. water bottle. Zippered pockets keep essentials secure, and an integrated tool organization pouch eliminates clutter. An Air Support back panel with body mapping technology adds back comfort to your adventure. For on-the-road safety, this CamelBak features reflective areas for visibility in low-light conditions. Features an external pump sleeve and an adjustable waist size (28" to 46"). Weight: 8 oz. Manufacturer model #: 2526. Space-saving hydration and storage solution Cargo capacity of 4L Built-in spot for included 21-oz water bottle Zippered pockets secure essentials Tool organization pouch Air support back panel Reflective areas