Pilot Oil-Based Twin Marker - Double-Sided - Extra Fine / Fine - Black : PLEASE GIVE UP YOUR SNEAKER CUSTOMS WITH POSCA OR ANY PAINT MARKER ! The Pilot Oil-Based Twin Markers is the perfect perfect choice for writing on almost any surface such as leather, plastic and metal, paper... and other surfaces. Crafters and scrapbookers in particular love this pen, and in the sneaker custom community it is often referred to as the best pen for writing on leather. You looking for a permanent Brush pen you can choose the "ADAM Permanent brush pen"