The pens have a water-based ink that won't bleed through your paper (applies to paper weights of at least 80 grammes)

recognized at the same level as Swan and Blauer Engel

This set includes a selection of 72 different alcohol based brush markers from Stylefile

Acid-free and eraser resistant

For optimal results

grog pointer 02 app marker 2mm Colors:Vesuvio Blue The pens have a water-basedThe Grog Pointer 02 APP comes with a fine 2 mm tip and a sturdy little barrel that feels solid in your hand. Its perfect for adding tiny details or crisp lines on pretty much any surface you want to work on. Comes ready with 8 ml of Grog Aqua Pro Paint, so you can dive in and start experimenting right away.