Brush sign pen PENTEL SES15C fluo – felt brush tip fluorescent ink

PENTEL Brush Sign Pen SES15C fluo is a felt brush tip pen with a flexible brush-style nib and fluorescent ink formulated for clear, high-visibility strokes on paper. The pen combines the responsiveness of a soft brush tip with a consistent ink feed, allowing a wide range of line widths from fine hairlines to bold brush strokes. It is intended for lettering, illustration, accent marking and any paper-based creative work that benefits from vivid fluorescent color.

Advantages

The flexible brush tip adapts to pressure and angle for natural stroke variation while maintaining smooth ink flow and minimal skipping. Fluorescent ink delivers bright, eye-catching color for emphasis and decoration. The felt construction of the nib provides durability and consistent performance over extended use. The compact, lightweight barrel supports comfortable handling during extended lettering or sketching sessions.

Suitable for

• Brush lettering and calligraphy practice on paper
• Illustration, sketching and hand-drawn accents
• Highlighting details and marking for design layouts
• Decorative work, cards, posters and signage on paper

Key specifications

• Tip type: felt brush-style flexible nib
• Ink color: fluorescent (high-visibility)
• Ink system: water-based dye ink for smooth flow on paper
• Suitable surfaces: paper and similar porous media
• Stroke variation: fine to broad depending on pressure and angle

How to use

Hold the pen at different angles and vary pressure to achieve the desired line width and calligraphic effects. For crisp thin lines, use the tip gently; increase pressure and flatten the tip slightly for broader strokes. Use on standard paper or sketchbook sheets; test on a scrap if using thin or coated paper to check for bleed-through or feathering. Cap the pen after use to prevent drying and store horizontally for optimal ink distribution.

Usage recommendations

For best results in lettering and illustration, pair the brush pen with smooth, medium-weight paper (around 120–180 gsm) to reduce bleed and allow clean stroke edges. When layering fluorescent colors, allow ink to dry between passes to avoid smudging. Keep the cap securely closed when not in use and avoid prolonged exposure to direct sunlight to preserve ink brightness.