100% Boiled merino wool and wool felt. Boiled wool is made by knitting merino wool and then boiling it down so that the fabric shrinks and becomes fulled. Felt is made in a different process by heating and placing wool fibres under pressure to felt and fuse the fibres together. They are both very water resistant, hold their shape well and make great outerwear whilst still being soft, supple and breathable. Boiled Wool clothing is quite water resistant and can be lanolised with our Disana or Sonett Lanolin conditioner to further enhance its natural water repelling properties.