This size tumbler was developed specifically for household composting, and the ComposTumbler is the World's best-selling, best-designed rotating bin composter. The key to making great compost fast is to have your organic materials contained so that heat builds up and the organic materials begin to break down. Air and moisture are the two other essential ingredients. The ComposTumbler is designed with air vents so air flow is unimpeded during composting. Drainage units allow for any excess moisture to escape so materials won't get soggy. The result is a perfectly balanced, contained rotating-bin composter that turns organic waste into compost in just 4-6 weeks. Specs: 5 cubic ft. (4 bushels, 37 gallons); holds about one 30-gallon trash bag; 30 H x 31 W x 26 D; heavy-duty polyethylene drum; made in the USA; aerator/drainage units and screened vents; turning grooves let you grip the drum to turn it; beautiful sage green color; FREE User & Composting Tips Guide.