The black color absorbs heat and retains it to enhance the composting process. Holds a generous 11 cu. ft. of compost material. Constructed from 100 percent recycled plastic so won't rot or rust. Easy access lid, adjustable air vents and sliding bottom door make it easy to use. Easy assemble snap-fit design, no tools required. Composting and use instructions included. 5 Year guarantee. This is a must-use product for all organic gardeners who compost.