Created to be highly water resistant, the Overboard Waterproof Backpack (£25) offers unflinching protection for your gear against the elements. Each bag is constructed from 600D nylon mesh fabric with heat-welded coated seams, and equipped with the company's Fold Seal System to create an airtight seal. Other features include a top carry handle, waist and chest clips, adjustable padded shoulder strap with D-ring, an elasticated web front pocket, and a pair of inner and outer Airtex pocket.