From Amazon
edding 3000 Permanent Marker - Red - 1 Pen - Round Tip 1.5-3 mm - Quick-Drying Permanent Markers - Waterproof, Smudge-Proof - for Cardboard, Plastic, Wood, Metal, Fabric - Marker Pens
Conrad Electronic
Edding 3000 4-3000002 Permanent marker Red waterproof: Yes