SUCH an amazing backpack with so many features. The zippered side opening makes it easy to access your things in the main compartment, even when the backpack is fully packed. There’s a separate compartment in the back that holds a 15” computer. The adjustable and padded shoulder straps keep the backpack firmly and comfortably in place on the back. The backpack has a handy outer compartment where you can keep for example, keys and mobile phone, so it is easy to find and to access your things. There’s space for both a water bottle and a larger umbrella in the side pockets. The fabric is made of recycled polyester. Using waste as a resource takes us one step closer to a more sustainable future. The backpack fabric is water-resistant. Size : 27x11x56 cm/18 l (10 ¾x4 ¼x22 "/5 gallon)