Greenware is a line of premium cold drink cups and lids made fro PLA a resin derived entirely from USA corn. PLA is 100% renewable through annual corn harvests and fully compostable in municipal and industrial facilities.  Greenware is the sustainable cup alternative, delivery positive economic, social and environmental advantages. These benefits lead to reduced fossil fuel usage, cutting edge disposale options and decreased landfill contamination.   How Does Greenware Compost?  Greenware will begin to break down at 150F and 90% humidity (ideal composting conditions). In approximately 50 days within those conditions, the cups will be completely gone. Greenware cups have met stringent, scientifically based specifications and have been certified 100% compostable by the Biodegradable PlastiCS Institute.