Remove piling from your sweaters and knits naturally with the Sweater Stone. Made of natural pumice, this stone easily lifts up all your sweater piling and renews its smooth finish. It is a traditional tool specifically made to revitalize the look of your knitted fabrics and keep them away from the rigors of dry-cleaning. Use this versatile sweater stone on your sweaters, blankets, upholstery, rugs or bags as well. Under normal use, it will last up to 10 years.