posca Fluorescent PC-5M Markers — Pack of 4, Refillable Matte High-Opacity Tips

Posca UNI Set PC-5M Fluor is a pack of four refillable, matte-finish fluorescent paint markers designed for high-opacity colour on paper, fabric and mixed surfaces.

These PC-5M fluorescent Posca markers deliver bold, eye-catching colour with a medium bullet tip that balances detail work and broader strokes. Supplied as a case of four vibrant fluorescent hues, the pens use water-based pigment ink that covers well on dark and light backgrounds. The markers are refillable and formulated for a durable, matte finish that’s popular among illustrators, crafters, sign makers and hobbyists seeking strong, neon shades without solvent fumes.

How visible are the fluorescent colours on different surfaces?

The fluorescent pigments in this Posca set are formulated for high opacity, so they stand out on paper, cardboard, wood and many textiles. While results vary by surface texture and colour, the inks are designed to retain brightness and show up even on darker backgrounds with a single or few passes.

• Designed for strong coverage on paper, poster board and cardboard
• Holds colour on untreated wood and light-painted surfaces
• Shows well on darker fabrics—test first on scraps for best results
• Matte finish reduces glare for signs and photos

What can I create with the PC-5M Fluor set?

These markers are versatile for craft projects, hand-lettering, poster work and textile decoration. The medium (PC-5M) tip offers enough control for lettering and outlines while allowing filled areas to be covered efficiently.

• Posters, signs and festival or event artwork
• Customizing trainers, denim patches and tote bags (pre-test recommended)
• Mixed-media illustrations and scrapbook accents
• Highlighting and bold accents in design sketches

How do I use and maintain these refillable Posca markers?

Using Posca PC-5M Fluor markers is straightforward: shake, press the nib to prime ink flow, then draw. To keep tips performing, recap after use and refill according to Posca refill instructions to extend life and minimize waste.

• Shake marker well before first use to mix pigment
• Press nib down gently to release ink until flow begins
• Recap immediately after use to prevent drying
• Refill with compatible Posca refill ink to reuse the body and avoid replacement

Are these markers suitable for fabrics and are they permanent?

Posca PC-5M Fluor markers work for textile decoration but are water-based and not inherently permanent like solvent inks. For best textile durability, apply according to fabric care guidance: test on a scrap, let dry thoroughly and follow any heat-setting steps recommended for the material.

• Good for decorative textile customization and temporary wearable art
• Not solvent-based; washfastness depends on fabric and post-treatment
• Always test and consider heat-setting for improved durability

Who is this for? The Posca UNI Set PC-5M Fluor is ideal for artists, crafters, sign-makers and hobbyists who want bold fluorescent colour with medium-line control and refillable convenience. Choose this pack if you need vibrant, matte neon accents for posters, packaging, mixed-media pieces or fashion embellishments and prefer a water-based, lower-odour alternative to solvent markers.