Stabilo Marking Pencil/Crayon, BlueAll-purpose, acid-free, graphite pencil, specially designed with softer center so it writes smoothly on any surface, washes easily out of fabric.  This is a SANE Favorite, as it takes little pressure to get a good mark on dark fabrics.  Much softer than the average Tailor’s Chalk Pencil. We recommend you test this pencil for removability before marking on white fabric.