Fluorescent Tailor Crayon (Stick)
A semi-hard wax tailor crayon in the shape of a pencil for easy handling. Wrapped in paper/cardboard, this crayon specially formulated for creating markings on textiles that glow under UV light. Although it is not specifically designed to be removable, the white version of this tailor crayon can be ironed away.
Note: Always test tailor crayon on a scrap piece of fabric before use to see how it behaves.