DESC: Double wall construction and charcoal black/grey color insulate mixture for excellent heat retention and faster breakdown. CompoSpin s unique air tubes provide constant air supply. The sphere design makes the composting process easy and fun as compost is mixed. Base with 8 ball bearings makes spinning mixing and tumbling easy. Simple assembly takes just 30 minutes or less. Protection against animals and pests. Made of 100 percent recycled and recyclable plastics for environmental sensitivity. Color: Charcoal Black. 50 Gallon capacity. Diameter: 38 .