Wool jackets are expensive, and caring for them isn't always easy. Wool has to be washed carefully by hand to prevent the fabric from shrinking and becoming too small and tight to wear. If you throw a belstaff-sale wool jacket into the washing machine or you wash it too carelessly, the wool may shrink. In some cases, a shrunken wool jacket is beyond repair. The fabric can shrink so tightly that it can't be restored to its former shape.