Air erasable embroidery pen, disappears after 24 hours. So allows you to draw patterns onto fabric and embroider them without leaving a trace! This is the pen that is included in my felt hoop embroidery kits.
Now I have it, I shall make use of it. I never needed it before as I never knew it existed!! Will probably get more use as a “spy pen” writing secret notes with my little boy!! Brilliant random little bits to add on to my craft kits order!