Heat Erasing Thermal Pens

Use these pens to mark removable lines on leather and fabric.  The color of the ink disappears with a bit of heat (we used a blow dryer).   These are the pen refills, which we use without the shell.
 
Price:  $0.50/Individual Pen
Colors:  Choose from Red, Blue, Black, White
 
~See the attached videos where we demonstrate using all four colors on fabric and leather.~
 
NOTE:  Leather and fabric types can differ.  Some leather can be poreous and any liquid can stain these types of leather more easily than others.  Also, in extremely cold temperatures, some colors might reappear.  Please TEST YOUR PENS on a scrap of the fabric/leather you will be using prior to using on your actual project pieces.