Sheep wool has the capability to keep the body at an even temperature because it does not trap heat.
Readily absorbs water and can also release it. Again it does not trap. For sheep this prevents moisture from being held at the skin. It prevents the clammy, cold feeling you may experience when wearing some types of synthetic clothing and sweating. Because of this feature it also dries out slowly.
Naturally fire resistant meaning it does not readily burn. This feature is what makes wool attractive as an insulating material in homes.
Strands of wool are crimped (imagine your hair crimped with a crimping iron - wool does that naturally). Due to having crimp wool has the ability to stretch and then return to it’s natural length. This elasticity is a very promising feature that we can not achieve with any other synthetic material. It is what makes the fiber strong and durable.
Felting is the nature of most animal fur that allows it to entangle and form mats of fabric. The fibers (strands) can interlock with each other due to ridges on the individual fibers. Sheep wool is highly regarded for its ability to felt and form fabrics that are near impossible to tear.
Felting is the wool characteristic that causes your wool item to shrink each time you wash it in warm or hot soapy water and subject it to to rough treatment (ie the washing machine ). So please, always read the washing instructions carefully!
Sheep wool is very strong and durable partly due to it’s felting feature. The fibers are strong and will hold together through much twisting and turning, much like a lock of hair. This feature is what creates such long las- ting garments.