Cobertor is the yarn used for manufacturing the traditional Portuguese papa blankets. It is spun from the fleece of native long wool sheep breeds. Papa blankets are documented since the mid 16th century and they are used to this day by many shepherds of Guarda. These blankets have a distinctive faux fur look, which is obtained through fulling and teaseling. The dense nap raised on both sides creates an exceptionally warm blanket. This same look and feel can be achieved on knitted garments made with Cobertor yarn by gently teaseling them with a flick carder or a dog slicker.