These Ultra-thick heat-erasable pen refills, designed for Sashiko embroidery, feature a durable 5 mm nib for bold, precise lines on leather, fabric, or canvas. They resist smudging and provide consistent, sharp lines, making them suitable for both beginners and professionals in sketching and pattern transfer. The white refill is best for dark materials (and may be hard to remove from light fabrics), while blue or red are suitable for light-colored materials. Always test on a small fabric sample before use to ensure complete removal.
