This may just be the most eco-friendly chunky chalk on the planet! 🌎 Midnight Lightning ultra-pure, high-performance chunky chalk is made from the mineral contents of seawater. No destructive mining here! This chalk is produced using natural processes such as solar evaporation. This, combined with plant-based 🌱 packaging (which is also fully recyclable! ♻️ and carbon neutral via offset credits) leads to a lower energy and environmental footprint vs. other chalks.