DMC-Light Effects Floss Pack. This dazzling versatile thread can be used for a variety of techniques, from cross-stitch to needlepoint to all types of embroidery and creative stitchery. Stitchers can work with one to six strands either alone or in combination with floss or other needlecraft threads. DMC Metallic Floss is a polyester metallic and viscose blend. Threads are washable, dry cleanable and resistant to tarnish. Package includes floss and easy care instructions. Imported.