The outer material is made from a treated cottonpolyesterblend. It passes a 3 stage coating process which provides firmness, a matte finish and makes it water resistant. The base is a extra coated canvas making it waterproof. The straps are cotton webbing which get really soft and comfy with use. The hardware is galvanised metal and the zips are coloured and chunky which provides character and charm. The front pocket has a concealed chunky zip.