Unique Pushing Design---The pen core can be retracted after use, so that the pen holder can play a protective role, and the pen core is not easy to damage. It's sensible of you to push back wax strip for convenient storage. Easy to Use---The wax refill is non-toxic, pollution-free, refill color is beige, refill length can be adjusted, drawing lines evenly and clearly. Ergonomic pen holder design, which makes it more simple to draws lines. Fabric Marker Set---Each set consists of two Sewing Chalk and 20pcs Refills, which can guarantee your use requirements for a long period of time. The back cover can be opened for replacement of them. Invisible Marker Pens---After a few days on different fabrics, the scratches will be naturally achromatic,and when the iron is ironed,scratches will immediately fade. It can also be used for glass, ceramics, furniture, etc. Satisfaction Guarantee---We greatly value our customers and want you to be completely satisfied with your purchase. If you aren't happy with your shopping experience or product, we urge you to contact us so we can resolve the issue