Through general wear and tear. they are gradually abraded away. this leaves the cover fabric vulnerable to dirt, pollutants and general wetting out. this in turn will decrease the overall life expectancy of the cover, weakening its structure and diminishing its original good looks.. Weathermax fabric has taken away the need to make a choice between a waterproof and a breathable fabric by offering a solution to both. weathermax is hightly breathable but still water resistant. weathermax is available in two weights and a range of colours. it is an ideal solution for boat and sail covers, biminis, awnings & spray hoods, uv. Frigid conditions present no challenge for rugged weathermax fabric by safety components. it undergoes no change in properties even at -40