Felted sheep's wool is one of the oldest known cloth. Felted wool is produced by rubbing wool fibers together with moisture and heat until a uniform textile structure has been created. Mercurius felted wool is made of 100% virgin wool, is of particularly strong and heavy quality (400g) and is available in 27 vibrant colors. This provides endless possibilities for your felting creativity. The tear-resistant felt is perfect for sewing and handcrafting things such as animals, flower children, dwarfs and much, much more.