This Silhouette Design With Internal Drainage Reservoir Self Watering Disk Helps Prevent Damaging Root Rot Helps Allow Oxygen To Easily Access Plant Roots Excellent Drainage Reservoir To Trap Water Keep It Away From Plants Roots 100 Recyclable Charcoal Specifications . Finish Charcoal. Size 8 in . Country of Origin United States of America. Weight 3 7 lbs