You need a light blue that's actually light — not sky-blue, not navy, just a soft, easy read. This POSCA medium brush tip in light blue gives you a semi-flexible nib that glides from 1 mm fine lines to 4 mm bold strokes without reaching for a second pen. Water-based pigment keeps the flow clean and the colour true. On the shelf now
| brand | POSCA |
| colour | Light Blue |
| tip_type | Medium Brush Tip (semi-flexible) |
| line_width | 1–4 mm |
| ink_type | Water-based pigment |
| category | Office Supplies > Writing & Correction |