Raw fleece has not been washed or processed since its removal from the sheep. The ability to felt a piece of fleece varies with the sheep breed, so if you are planning to purchase raw fleece, remember to ask if it is good for felt-making. In order to remove the dirt and separate the wool fibers, you must card raw fleece with carding tools. When raw fleece has been carded, the wool fibers are left lying in the same direction. Wool can be carded into quilting batts or into strips.
Combed wool comes in natural or dyed ropes with all fibers lying in the same direction.
In most craft stores, it can be found in the doll section, where it is often marketed as doll hair. To shrink and thicken woolen cloth by moistening, heating and pressing.