The Corriedale produces bulky, high-yielding wool ranging from 31.5 to 24.5 micron fiber diameter. The fleece from mature ewes will weigh from 10 to 17 pounds (4.5-7.7 kg) with a staple length of 3.5 to 6 inches (9-15 cm).  The yield percent of the fleece ranges from 50 to 60 percent.  Mature rams will weigh from 175 to 275 pounds (79-125 kg), ewe weights range from 130 to 180 pounds (59-81 kg).