This exclusive marking pen from Prym is great for marking seams and patchwork. In particular, relatively fine and accurate work with stencils can be mastered with this marking pen. It is shaped to sit comfortably in the hand and it's fine white tip guarantees accurate tracing of markings and pattens onto light-coloured and dark fabrics. There is an eraser cartridge on the upper end of the pen to remove markings. When washed, the markings disappear completely.