StarBox8482; Charcoal Breathable Planter Japanese Style (small) Eco-friendly Japanese style charcoal planter, simple and elegant. Handmade charcoal planter, breathable and absorable. The charcoal nature allows more airflow and prevent over-watering. Note: The planter looks kind of grey when it's dry because of charcoal nature, once you water it, the black color will show up.