Linen Mankind’s oldest fabric, linen wrapped mummies 4,500 years ago.  Made from flax, which can’t be cut, the fibres are strong, crisp & mothproof.  Linen’s natural properties make the best summer clothes, keeping wearers cool & dry.  Enviro-friendly linen needs less pesticides/ fertilizers than cotton.  100 years ago, Londonderry in N Ireland was the centre of…