A great option for duke of edinburghs award expeditions the aqua has an anthrofit ergonomically shaped back system to maximise carry comfort and a waterproof dry system lining which keeps gear within the main compartment dry features spacious and practical daysack from blacks removable waterproof roll up dry system liner featured within the hood and main compartment to keep the packs contents dry and protected antrofit ergonomically shaped back system daisy chain attachment loops side co