12-1/2 x 10 in plates (31.7 x 25 cm). 100% compostable (only compostable in industrial facilities) platters. Made from plant based materials. Microwave safe. Why Choose Hefty EcoSave: These 100% compostable plates are made from plant based materials and deliver the heavy duty quality that you've come to expect of a Hefty platter. hefty.com. how2recycle.info. To Contact Us Visit: hefty.com, call: 1-800-433-2244 or write: Hefty Brands, PO Box 85583, Richmond, VA 23285-5583. Product made in China. Why Choose Hefty EcoSave These 100% compstable platters are made from plant based materials and deliver the heavy duty quality that you've come to expect of a Hefty platter.