Wensleydale wool when felted keeps it's curves and crimp and waves.  When used in a window this is shown when the light shines through.  Custom made to size for a specific window.  Cost is $200/sq metre. Window felts are great for summer and winter. In summer they keep heat out during the day. In winter they keep heat in at night and reflect light back into the room with a warm glow.  Email for info.  ditzsmall@gmail.com