The Pentel Wet Erase Chalk Markers can be used either indoors or outdoors.
They're great for using on menu chalk boards!
The semi-permanent formula prevents it from running off during light rain once the ink has dried.
It can however be removed with a damp cloth.
You can achieve different thickness lines with the chisel-style tip. (approx 1. 5-4mm).
Ideal for use on black boards, slate boards and glass.
Unsuitable for use on MDF, painted on wood or vinyl boards.