Dry cleaning is recommended. You can also hand wash in cold water with a mild cleaning agent designed for wool. Hand wash does not mean the Gentle or Hand Wash cycle in a washing machine, as the agitation can cause the fibers to interlock. Line dry, taking care to rotate the woolen to prevent stretching. Iron only on low, only if necessary. Do not bleach. If these instructions aren't followed significant shrinkage and a change in texture could occur.