Schneider Maxx 130 113001 Permanent marker Black waterproof: Yes

Permanent marker with Cap-off ink, i.e. the marker can remain open for several days without drying up. Quick-drying, low odour, lightfast, smudge-and waterproof. The specially designed head is on the top line and is thus protected against breakage in the marker. Interchangeable cap with clip.

Price: 0.95 from Conrad Electronic