Instead of pure merino wool, the Women's Activist Message Tee from Houdini uses a blend of wool and Tencel or Lyocell, a fiber made from wood. This makes the fabric softer than pure wool, actively wicks away moisture and is guaranteed not to scratch. Apart from that, it is breathable, naturally odor-resistant, fast-drying, warming and temperature-regulating. The shirt is relatively close-fitting, has friction-free offset seams, is cut slightly longer at the back so that you can bend down, and the wool comes from sheep from which the skin around the tail has not been painfully removed (no mulesing). And if you part with it one day, it's biodegradable and won't be swimming around in the plastic carpet in the sea.