Oxford Products Aqua V 20 Extreme Visibility Backpack 20 LOxford's Aqua Bags are one of the easiest ways to get your gear from A to B, safe and dry. They are made from tough PVC tarpaulin, which is welded to form waterproof seams. Key Features 20 litre capacity waterproof backpack Waterproof roll top closure Phyzibility 360 degree reflective detailing 3 x Air Mesh padded panels for greater air circulation and comfort Water resistant zipped external pocket Wipe clean, waterproof construction with welded seams