This clever set includes 20 fineliner pens in vibrant colors encased in a convenient plastic case. The case folds out into a fun stand-up easel making it easier to choose pens and keep them organized. The .4mm fine point pens feature non-smudging, water-based ink which is formulated to sustain a long cap-off time. The long-wearing tips are encased in metal allowing for hours of use for everything from note taking to Manga art.