Crafted from water soluble inks, these erasable fabric marker pen is safe for children and family use, ensuring creative while maintaining clear marking even after machine washing Great for marking cutting line and seaming positions on garments, quilt, and other fabric project, improving efficiency in sewing project and craft classes the convenience of our PAck of 6Pieces Air Erasable Fabric Marker Pen, designed to naturally disappear over time or with washing, eliminating post project cleanup worries Very suitable for professional tailors, enthusiasts, students and anyone who seeks marking tool, enhancing their work effeciency Featured fine tip designs: 0.5mm or 1.0mm pen tip, these fabric marking pen allow for precisely detailing, great for various sewing and craft project that demand high accuracy