A kilim (Azerbaijani: Kilim , Turkish: Kilim, Turkmen: Kilim) is a flat tapestry-woven carpet or rug traditionally produced in countries of the former Ottoman Empire, Azerbaijan and Turkic countries of Central Asia. Kilims can be purely decorative or can function as prayer rugs. Modern kilims are popular floor-coverings in Western households. in tiny scales, similar to the scales found on a strand of human hair.Heat, motion, and moisture of the fleece causes the scales to open, while agitating them causes them to latch onto each other, creating felt. There is an alternative theory that the fibers wind around each other during felting.Plant fibers and synthetic fibers will not wet felt.