For day hiking and wet outdoor activities, the Eureka Dry looks like a great combination of versatile pack and dry-bag. The back and straps are made of mesh material for ventilation, and there are all kinds of pockets and straps for holding your gear. It uses a dry-bag-type roll closure, and the straps can even be removed completely, leaving just the dry-bag. Not exactly urban camouflage, but it looks like a comfortable, versatile pack.