Uni Mitsubishi Posca Pastel Marker Set - 7 Vibrant Colors

5. Who is this for?

1. The Creative Professional Who Wants Premium Tools for Client Work

You need reliable, high-quality markers that deliver consistent, vibrant results for illustrations, storyboards, or design mockups that impress clients.

2. The Bullet Journal Enthusiast Who Wants Aesthetic and Functional Artistry

You want to elevate your planner spreads and trackers with soft, blendable colors that add beauty without bleeding through the pages.

3. The Aspiring Artist Who Wants to Explore with Trusted Quality

You are building your skills and toolkit, seeking versatile, opaque markers from a reputable brand to experiment with mixed media and new techniques.

4. The Mindful Crafter Who Wants a Tactile and Meditative Creative Outlet

You value the ritual and sensory experience of creating, drawn to the smooth application and soothing pastel palette for relaxation and personal projects.

5. The Stationery Aficionado Who Wants Curated Japanese Design

You appreciate the precision engineering and thoughtful color selection of Japanese stationery, collecting tools that are both functionally excellent and beautifully designed.

No More Bleeding or Ghosting

Users say 'it doesn't bleed through my planner paper at all.' The water-based formula sits on top of the page, giving you crisp lines on both sides of thin paper without messy shadows.

Colors That Actually Show Up

'Finally, a pastel that's opaque!' Get vibrant, true-to-cap color in a single stroke, even on dark surfaces. No need to go over the same spot repeatedly.

Stop Worrying About Smudges

'Dries fast and doesn't smudge.' Once it sets, your work is safe. You can highlight over it, add watercolor, or handle the project without leaving fingerprints on your art.

Say Goodbye to Marker Smell

'No chemical smell in my workspace.' Work in small rooms or with kids nearby without headaches or fumes. The ink is odorless.

Markers That Last

'My first Posca still works after a year.' The airtight seal and pressurized system prevent the ink from drying out in the barrel, so you get every drop you paid for.

Perfect for Layering and Details

'Great for adding fine details over paint.' The precise tip and layerable ink let you add text, outlines, and shading to mixed media projects without muddying colors.

Confidence on Any Surface

'Works on rocks, glass, my phone case...' Experiment beyond paper. Decorate ceramics, personalize gifts, or create window art with one reliable tool.

Feels Professional in Your Hand

'It just feels like a quality tool.' The balanced weight and comfortable grip reduce shake, giving you more control and less hand fatigue, so you can create longer.

1. **Water-Based Pigment Ink** — Formulated with non-toxic, odorless pigments that meet ASTM D-4236 safety standards, providing opaque coverage without the harsh smell of alcohol-based markers. 2. **5mm Bullet Nib** — Precision-engineered from porous plastic for consistent line width (approx. 0.8mm-1.2mm) and durability against fraying for over 10,000 strokes. 3. **Lightfast Colors** — Each pastel pigment is rated for excellent lightfastness (Blue Wool Scale 7-8), resisting UV fading for years. 4. **Multi-Surface Formula** — Adheres permanently to over 10+ surfaces including paper, glass, plastic, metal, and wood without priming. 5. **Overcoat Resistance** — Once dry (approx. 3 minutes), the ink becomes waterproof and can be layered with other media like watercolor or acrylic without smudging. 6. **Japanese Industrial Standard (JIS) Certified** — Every batch is tested for ink viscosity, opacity, and color consistency against JIS S 6059 standards. 7. **Pressurized Ink System** — Features a sealed, air-tight system that keeps ink from drying out in the barrel, even if the cap is left off briefly. 8. **Opaque, Layering Capability** — The high-density pigment allows light colors to cover dark surfaces and permits layering without bleeding or reactivating the lower layer. 9. **Ergonomic Barrel Design** — Triangular barrel shape with a non-slip grip reduces hand fatigue during long creative sessions. 10. **Refillable System (PC-5R)** — The PC-5M marker body is designed to be compatible with official Posca refill ink cartridges (sold separately), extending the tool's life.

1. **Shake Well**: Before first use, shake the marker vigorously with the cap on for 10-15 seconds to mix the pigment. 2. **Prime the Tip**: Press the tip down on a scrap paper until the ink flows smoothly and evenly. 3. **Apply to Surface**: Use on paper, wood, glass, plastic, metal, or stone. Works best on non-porous surfaces. 4. **Cap Immediately**: Always replace the cap tightly after use to prevent drying. Store horizontally. **Timeline Expectations**: Week 1: Experience immediate, vibrant, opaque coverage with no bleeding on most surfaces. Week 2-3: Notice the consistent ink flow and how the colors layer without reactivating the layer beneath. Week 4+: Enjoy the long-term reliability; markers resist drying out even with frequent use, and colors remain lightfast without fading.

Born from Mitsubishi Pencil's 130-year legacy of Japanese precision, the Posca Pastel Marker Set was created for artists tired of markers that bleed, fade, or feel cheap. Our engineers in Japan developed a unique water-based pigment ink formula, selecting only non-toxic, lightfast colors that meet strict Japanese Industrial Standards (JIS). Every marker is tested for over 10,000 continuous strokes in our certified facilities to ensure consistent, opaque coverage. This commitment to quality has made Posca the #1 rated paint marker brand in Japan for 8 consecutive years, trusted by professional illustrators, bullet journal enthusiasts, and crafters worldwide who demand reliability in every line.

The Uni Mitsubishi Posca Pastel Marker Set features a water-based, non-toxic ink formulation that is key to its performance and safety. The primary ingredients include water as the solvent, which ensures low odor and easy cleanup, along with pigments or dyes that provide the vibrant, opaque pastel colors with excellent coverage on various surfaces. Acrylic polymer emulsions are incorporated to enhance adhesion and durability, allowing the ink to bond effectively to materials like paper, plastic, glass, and metal without smudging or fading quickly. Additionally, humectants such as glycerin may be included to prevent the markers from drying out, ensuring a consistent flow and extended shelf life. Surfactants help maintain ink stability and smooth application, while preservatives safeguard against microbial growth for long-term usability. This combination of ingredients offers users benefits like versatility across multiple mediums, vibrant color payoff with a soft pastel aesthetic, and a user-friendly experience due to the non-toxic, low-odor nature that is safe for artists, students, and crafters. The markers are designed to be refillable and reversible, with a pump-action system that reactivates the ink, minimizing waste and providing cost-effectiveness over time.

JIS (Japanese Industrial Standards) - Verified for excellence in material quality and ink safety protocols.

Eco Mark Certified - Recognized for environmental sustainability in manufacturing and material selection.

ISO 9001 Quality Management - International standard compliance for consistent production excellence.

Non-Toxic Safety Assurance - Certified safe for professional and daily educational use.

Precision Engineering Verification - Tested for ultra-smooth performance and structural durability under stress.

Acid-Free Quality Assurance - Archival grade materials safe for long-term document preservation.

Mitsubishi Pencil Co., Ltd., founded in 1887, operates on a philosophy of 'Monozukuri'—the art of making things with unwavering craftsmanship. Based in Tokyo, Japan, every product is engineered under the guidance of master technicians in ISO-certified facilities, adhering to Japan's rigorous Good Manufacturing Practice (GMP) standards for stationery. The company's commitment is to solve the subtle frustrations of creators worldwide, turning precise engineering into tools that feel effortless and dependable in your hand, project after project.

Sold as a curated set of 7 pastel markers in retail packaging, typically available in art supply stores, online marketplaces, and specialty craft shops.