Our classic FS Metallic features a strong textured polyester filament core with a metallized polyester foil wrap. Madeira offers FS Metallics in 50, 40, 35, 30 and 20 weights for a high speed embroidery and decorative sewing. A strong, 3-ply, No. 15 thread is also available for use in constructive sewing and is ideally suited for seaming and decoration on jeans and leather goods.