High-quality Polyester Material One Sided fusible interfacing can be easily fused with a hot Iron. This product is also perfect for protecting and strengthening fabric stitching, as well as providing structure for collars and facings. Various Applications It can be used for quilts and crafting projects. Good for use in handbags, purse, cuffs, collar, pockets, waistbands, blouses, voile, handkerchief linen fabrics, broadcloth, jersey, knits, men and women garments. Best for light to medium weight fabrics. Size is perfect for medium to large projects Every Sewing Interfacing package is 39 x 2 yards, making it perfect for medium to large projects. Its also convenient to use on several small-size garments by simply trimming the interfacing to any pattern based on your requirements. Easy to Apply Use the interfacing on the wrong side of the fabric, make sure that the adhesive coating (shiny side) of the interfacing is facing down. Do not apply heat directly to the interfacing (cover it with a cotton cloth). Invisible and Lightweight made from quality polyester and black glue (positive without glue), the iron on fusible interfacing is single-sided, lightweight and thin, which is nearly invisible to see on the fabric, comfortable to touch and with nice breathability.