The source fuse 8l hydration backpack a light weight mid volume pack that keeps you light on the trail 8 liters of cargo is just what you need for a short ride or hike separated between three compartments one of them padded for protecting your mobile cargo is easy to organize a structured back system allows ventilation of the spine area of the back source fuse 8l hydration backpack features fuse hydration pack features lightweight fabrics padded shoulder straps adju