The NanoNuno umbrella has an interesting claim. Is it that it keeps me even drier? Perhaps it keeps my feet dry as well as my head? The NanoNuno umbrella goes one better – it keeps itself dry. Modelled on a natural phenomenon – the lotus leaf – the fabric of the NanoNuno simulates the rough nanostructure on the leaves of the lotus plant. Because this leaves a much smaller surface area to which things can stick compared with a smooth surface, dirt and moisture simply roll off, so with one little shake, it’s dry.