There is now no need to separately pin out your fabric and interlining, as this product can be used as if it were a normal lining. This is our premium bonded lining and interlining product, that takes a lightweight interlining, and bonds it to a poly cotton sateen lining. This is softer and easier to work with than our standard product, and was developed for a leading household name to use in their interlined curtains. It gives the look and feel of interlined curtains without all the extra time and trouble. This really is an fantastic product, at a very competitive price.