3 Oysters Haneul Bottled Ink is a sky blue with a red haloing effect, similar to Pilot Kon Peki and Sailor Souten. Haneul translates to sky in Korean.

3 Oysters Inks are from South Korea. The unique glass bottle design has an angled facet on one corner so it can be pivoted for easier access to fill from the bottom of the bottle. All colors are pH-neutral, made from water-based dyes, and are non-permanent.