Machine washable. The best way to keep this fabric in shape is to wash it inside out. To prevent any slight shrinking, air dry or dry on a low setting. Rather than washing/dry cleaning your sweaters, consider using a non-toxic sweater spray to freshen and deodorize between wears. Note: Keep in mind all sweaters pill, no matter what. The easiest way to keep them looking fresh is to use a sweater stone or shaver to remove the pills.