This 16-piece heat erasable fabric marker pen refill set is a must-have tool for tailors, designers, and embroidery professionals. It works just like traditional tailor chalk but with more precision and no mess. The set includes 4 refills each in red, blue, black, and white – perfect for marking on light and dark fabrics. The magic ink disappears with heat (like ironing or steaming at 70°C) and can even reappear in cold temperatures (below 5°C), making it great for rechecking your stitching or layouts. Whether you're doing garment cutting, design tracing, or embroidery work, these fabric pen refills offer a modern upgrade over regular chalk used in tailoring. Easy to insert into standard fabric marker pens, these refills offer smooth writing and clean erasing without water or rubbing. Perfect for boutique work, fashion designing, pattern drafting, and anyone replacing old-style tailor chalk with better tools.