<p>Use the Big Sur hydration backpack from outdoor products for your next hydrating adventure pack. This backpack includes a 3-litre hydration bladder that is BPA free. The large main compartment with top and vertical entry provides easy access for all your outdoor gear. The aluminum stays help to stabilize large loads while trekking or hiking. The hydration pack has a wrap-around hip belt to help reduce the weight off your shoulders. The polyester backpack has cargo capacity which is 28.5 liters. The backpack is suitable for a senior, adult and teen. This Big Sur Backpack comes with a lifetime guarantee from Outdoor Products.</p>