For the first time Duckworth has re-invented this world-famous knit in wool. First created in 1912 by JE Morgan (Long John Morgan) the waffle stitch traps air in pockets against your skin creating a buffer that regulates your core comfort. 80% Helle Rambouillet Merino and 20% Polyester maintain the unique waffle shape. One of the world's lightest warmest fabric. Very breathable and light, when covered with a shell/layer the waffle knit traps air, creating a great insulation layer - perfect all season Merino shirt!