Arc'teryx Aerios 18 Walking backpack (18 l - Regular, yellow) - Lightweight walking backpack for day tripsA lightweight backpack with a versatile, adjustable carrying system for the perfect fit. The Aerios 18 form Arc’teryx is a compact walking backpack that leaves nothing to be desired in terms of durability and flexibility. It is made from extremely hard-wearing Hadron LPC and is characterised by its clever adjustment options.The shoulder straps are padded and breathable. Plus, the sternum strap is easy to adjust, while the hip belt is also detachable. Two side compartments, a lid compartment and a clearly organised inner compartment offer plenty of storage space for everything you might need on a day trip. In addition, there is also space in the shoulder straps for two 500 ml soft flasks or electronic devices.