Acerbis H2O 10L Hydration Backpack in Black Grey, made from durable Polyester. This backpack features a 10 liter capacity, perfect for carrying essentials. It includes a 3 liter water bag, making it ideal for those needing a water reserve while on the go, offering a comfortable alternative to a baby carrier. The backpack is designed with an internal thermal pocket to keep contents cool. It also has an external net pocket for transport, a small external zip closure pocket, and an additional pocket with a removable tool holder that uses magnets. The SBS zip ensures smooth operation. The innovative x shaped closing system provides central quick release and 4 Velcro adjustments, effectively canceling oscillatory movement and distributing shoulder strap pressure evenly across the chest, not just the shoulders, for a secure and unhindered experience. The back area is made with breathable fabric for comfort.