Molotow ONE4ALL Marker Signal Black

I’ve been using this on plastic plant pots and glass jars, and the coverage is impressively dense after one coat. The refillable system is a nice touch since I hate throwing out dried-out markers.

Finally, a marker that actually stays black and doesn't fade in my studio window. The ink goes on completely opaque in one pass, and the refillable system saves me from buying a whole new marker every time it dries out.