Metallic materials in the fabric an make the fabric very fragile. The metallic yarn fabrics are very attractive but are not always serviceable. Friction and mechanical action in the wear may cause the fragile metallic yarn to snap. Stains and perspiration may cause the metallic yarn to tarnish. Some metallic yarn are one surface coated and will dissolve in normal dry cleaning. Be sure to address this with your fabric sales representative to avoid problems.