The oxford aqua backpack is a 100 waterproof rucksack with roll top enclosure designed with reflective detailing for extra visibility to other road users and with two padded back panels for this is the perfect backpack for both safety and comfort oxford aqua backpack features 100 waterproof rucksack with roll top enclosure wipe clean waterproof construction with welded seams external pocket with water resistant zip adjustable waist amp chest strap easy grab handle webbed