Staedler Triplus Fineliner Porus Pens feature a comfortable triangular barrel and durable super-fine 0.3 mm tips. Used and endorsed by renowned adult coloring book author Johanna Basford, this set of 48 pens includes a range of colors for brilliantly decorating your coloring book pages These slim pens are ergonomically designed for comfortable drawing and writing. Their 0.3 mm porous points are protected by a metal-clad tip. The acid-free, non-permanent, "dry safe" ink won't dry out even if the pen is left uncapped for several days.

• Triangular shape for relaxed and easy drawing
• 0.3 mm superfine and metal-clad tip in 48 Brilliant Colors
• No bleeding through to other pages in almost any coloring book
• Straight and true, places all your lines exactly where you want them
• Acid-free, non-permanent, "dry safe" ink won't dry out even if the pen is left uncapped for several days
• Water-based ink
• Easy to wash off most fabrics