Longer Lasting Mark—If chalk isn't really cutting it, try the Sewline Duo Marker for clean, clear lines. The marking pen is designed to provide and even mark on fabric that won't bleed or penetrate through multiple layers.
When you are ready for the marks to disappear, use the chisel-tipped Eraser pen to quickly remove any trace. It can even remove marks under stitching lines or that have been on fabric for an extended period.
A must have dynamic sewing duo!