The source ride 15l hydration backpack the ride fits any ride itrsquos a compact and lightweight hydration pack but quickly reveals plenty of options to expand and make a perfect fit for longer outings includes 3l 100oz widepac hydration an insulated hydration pocket and 3 cargo compartments offer plenty of room to get your stuff organized also a zippered expanding main pocket and room for external storage between the pockets make sure everything fits in the reinforced backs