Dakine Jade Hydration Bag. This is especially useful for longer hikes where you need to carry more water. Comfort: Carrying a heavy water bottle in your hand or in your backpack can be uncomfortable and affect your balance. A hydration pack evenly distributes the weight of the water on your back, which can make your hike more comfortable. Features: Fits most water bottles Front zippered compartment Interior dual slash pockets Mesh back window for better ventilation Pull drawstring toggle closure Adjustable and removable crossbody, shoulder strap Exterior snaphook for attachments