Felt is a fabric of matted, compressed fibers, such as wool or fur. They are first wetted then either trampled or tightly tied together. In Mongolia or eastern China the wet felt is sometimes tied around a tree and a horse pulls the ropes. It is a flexible, easy and fast process. Not only used as floorcovering and insulation but also to make hats or boots. In order to make patterns, dyed wool can be pressed into the main layer. Sometimes small pices of coloured cloth is sewn on top of the felt.