FriXion heat eraseable pen
Great for marking fabric because the ink disappears with heat from an iron.
Why do I love these?
These pens have become my GO TO fabric marker for pattern markings, stitch lines, or anything that I want to erase later. Just lay a hot iron on the inked line and it disappears. They work well on fabric but you can also use them on regular paper for taking notes so it’s a dual purpose thing and I love multi-taskers.