CamelBak M.U.L.E. hydration backpack features distinct yellow trim Pre-owned, good condition Bladder not included Features a gray and black nylon body accented by high-visibility yellow trimming around the storage pockets Model: CamelBak M.U.L.E. (Multi-Use Lightweight Equipment). Design Purpose: Originally built as a sleek, narrow-gauge profile pack specifically for mountain biking and day hiking. Capacity: holds 9 to 12 liters of total cargo gear capacity. Key Features: Integrated front tool organizer pockets, external mesh bungee overflow storage, and lightweight mesh shoulder straps