PENTEL Brush Sign Pen SES15C fluo — brush-tip marker, fluorescent ink

PENTEL Brush Sign Pen SES15C fluo is a brush-tip marker designed for hand lettering, illustration and highlighting. The flexible brush nib enables a range of strokes from fine hairlines to broad sweeps, while the fluorescent ink provides bright, high-visibility accents. The pen is intended for use on paper and similar porous surfaces where vivid color and variable line width enhance lettering, sketches and annotated documents.

Advantages

The brush-style nib offers responsive spring and good control for varying pressure, enabling smooth transitions between thin and thick lines without switching tools. Fluorescent pigment delivers strong visual emphasis for highlighted text or illustrative details. The compact pen body balances comfortably in hand for extended drawing or lettering sessions and the ink dries quickly on paper to reduce smudging in normal handling.

Suitable for

• Hand lettering and calligraphy practice
• Sketching and illustration accents
• Highlighting important notes or diagrams
• Design mock-ups and color emphasis in layouts

Key specifications

• Tip type: flexible brush nib for variable stroke widths
• Ink type: fluorescent water-based pigment ink
• Suitable surfaces: paper and other porous media
• Drying properties: fast-drying on paper to minimize smudging
• Pen form factor: lightweight, handheld marker body

How to use

Hold the pen at different angles and apply varying pressure to create thin hairlines or broader strokes; lighter pressure produces fine lines while increased pressure fans the brush for wider marks. Use smooth, continuous motions for consistent curves and lettering. Allow the fluorescent ink to dry briefly before stacking pages or erasing nearby pencil marks. For highlighting, sweep the brush lightly over the area to avoid saturating the paper.

Usage recommendations

Store capped and upright to prevent nib drying. Test the ink on a scrap of the intended paper to check bleed-through and color intensity before working on final pieces. Avoid use on glossy, non-porous surfaces where ink may not absorb properly.