Why you need this tool Makes temporary marks that are easy to see, easy to remove, and suited to leather and textile work. Ideal for shoemakers, tailors, leatherworkers and craftmakers who need precise, nonpermanent line marking. Key benefits Visible, controlled marking: white ink for dark leather becomes visible 5–20 seconds after writing so you can check lines before continuing work. Temperaturecontrolled erasure: select refills disappear with heat or reappear with cold, giving predictable, temporary marks for finishing steps. Refillable and costeffective: one reusable empty pen body plus 10 erasable refills in mixed colors provides longterm use without buying pens. Product features and performance White marker specifics: the white refill is for dark leather only. White color develops 5–20 seconds after writing and the mark will reappear if exposed to very cold temperatures (around −50 °C). temperature disappearing refill: marks made with the temperature refill will disappear when exposed to approximately 60 °C. Compatibility: formulated for use on leather, footwear, clothing and a variety of creative handcraft surfaces where temporary identification or alignment lines are needed. Refillable pen body: 1x empty, reusable pen accepts the included erasable refills for easy replacement and consistent performance. Contents and longevity: 10x erasable refills supplied in mixed colors—ample quantity to cover extended projects and varied marking needs. Practical applications (examples) Shoemaking and : mark stitch lines, cut guides or placement points on dark leather using the white refill; remove or hide temporary marks later with heat or as the project finishes. Garment and pattern work: mark seam allowances, alignment points and alteration lines on fabrics and leather; temperature disappearing marks can be removed with an iron or heat gun when no longer needed. Creative handcrafts and prototyping: temporary layout lines for templates, embroidery positioning or leather tooling; color options help organize multiple reference lines. Package contents 1x empty, refillable pen body 10x erasable refills in mixed colors (includes white and temperature disappearing types) Notes and usage tips Use the white refill only on dark leather as specified. Allow 5–20 seconds for the white ink to develop fully after writing. Marks made with the temperature disappearing refill will fade at approximately 60 °C; white marks can reappear under extreme cold (−50 °C). Store refills and pen in a cool, dry place to maintain performance. This product provides reliable, temporary marking for leather, footwear, clothing and creative handcraft projects with predictable development and disappearance behavior and a refillable pen for ongoing use.