Valve-action Structure: SHAKE WELL BEFORE EVERY USE, Great control of ink and gas, high-technology
Multiple Colors: 12 glitter colors, blink blink: red, orange, yellow, green, sky-blue, violet, fluorescent pink, magenta, fluorescent green, sliver, gold
Ink properties: quick-drying, erasable with hard scrape and soluble in water. Environmental friendly.
Smooth Writing: Writes on only light-colored surfacessurfaces with your imagination and creation; allowing you to easily write on greeting cards, poster, canvas, album and so on. Not suitable for metal, glass, rock and dark surfaces.
Ink Certificated: Conforms to ASTM D-4236 certificate, non-toxic and acid free. But don't swallow it.