0.7 mm marking pen, UV Set of 3 - Heat makes this disappear!Pilot
Can be used for upper making or any sewing project. The mark visible by eye, but under UV light (blacklight) is where really shines - literally! The markings disappears easily with a little heat, so cleaning the upper doesn’t need any more solvents, rubbing or much effort. Silver pens work great but these are cooler. Price is for set of 3.