TCM plantable eco-friendly pen box contains 5 plantable recycled paper pens in a Hexagon paper box. The pens have 90% less plastic than regular pens, so we call it ZERO Plantable Pens. All pens have hi-shine's low viscosity, blue colored ink which has a 2-year shelf life. All pens have government-approved seeds of different plants (with seed name on each pen) with specified expiry dates contained in a water-soluble seed capsule. After usage, you can plant the pens as per the planting instructions in the product packaging.