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Office markers designed for bright, wipeable signage and classroom displays, delivering bold neon coverage and easy removal. Teachers, artists and small businesses can create eye-catching menus, lesson boards and window art with minimal fuss. Are Chalkola Window Pens the most durable wet-erase markers for frequent use?
⚡ At a Glance
- • Ink Capacity: 28 g ink per marker, marketed as eight times more than typical markers
- • Best for: Teachers, artists and small businesses creating window displays and lesson boards
- • Not ideal for: Porous surfaces, which will absorb ink and cause ghosting
Jumbo 15 mm nib with a rectangular 3-in-1 tip enables wide, bold and fine lines. Water-based wet-erase ink wipes clean from non-porous surfaces using a damp cloth.
Longer Use Between Replacements - thanks to 28 g ink per marker
Each marker contains 28 g of water-based ink, significantly more than typical 4–8 g refill volumes. The larger reservoir sustains longer continuous writing and drawing sessions.
Fewer marker swaps and less frequent repurchasing for high-use environments such as classrooms or cafes. Extended ink supply keeps larger signs and multi-day displays uninterrupted.
Versatile Line Options - with the 3-in-1 rectangular nib
The rectangular tip can be used on three edges to produce wide strokes, bold lines and finer lines for detail work. The 15 mm jumbo size makes broad lettering quick while one edge handles finer accents.
Create bold headlines and neat details without changing pens, saving time when preparing menus or teaching aids. One pen covers multiple marking needs for diverse projects.
Wet-Erase Convenience - thanks to water-based, non-toxic ink
Ink is water-based, xylene-free and odour-free, formulated for wet-erase use on non-porous materials. Removal works with a wet wipe or cloth and porous surfaces should be avoided to prevent staining.
Displays can be refreshed rapidly at the end of the day using a damp cloth, ideal for rotating menus or classroom boards. Safe formulation suits use around children and in indoor spaces.
✨ The 4 Key Reasons for Chalkola Window Pens
- 3-in-1 nib - Switch between wide, bold and fine lines instantly.
- Neon colours - Make menus and displays pop for passing customers.
- Wet-erase water-based ink - Erase easily with a damp cloth, no residue.
- Eco friendly and non-toxic - Safe for classrooms and regular handling by kids.
📋 Technical Details at a Glance
- Category: Office markers
- Brand: Chalkola
- Pack size: Pack of 8
- Ink per marker: 28 g wet-erase ink
- Nib type: Rectangular 3-in-1 nib
❓ Frequently Asked Questions
Q: Can these be used on car windows and shop glass?
A: Yes, designed for non-porous surfaces including glass and car windows; use a wet cloth to erase.
Q: Will the ink stain porous surfaces like wood or paper?
A: No, porous surfaces will absorb ink and cause ghosting, so test a hidden area first or avoid porous materials.
Q: Are the markers safe for classroom use around children?
A: Yes, water-based ink is described as eco friendly, non-toxic, xylene free and odour free, suitable for classroom environments.
🏆 Our Verdict
Ideal for teachers, artists and small businesses who need bold, wipeable signage and frequent updates. The combination of a 15 mm jumbo 3-in-1 nib and unusually large 28 g ink reservoirs delivers versatility and long running time. High ink capacity and easy wet-erase cleanup make the set a practical, economical choice for regular use.
