SULLIVANS-Metallic Floss. Add some shimmer to your next project with this metallic floss. This colorfast floss is size 25, making it ideal for blending to create dazzling stitched results. This package contains 8.7 yards of metallic floss. Available in a variety of colors (each sold separately). Machine wash, not machine dryable, safe to iron, dry cleanable. Imported.