made from naturally fallen Areca palm leaves. 100% biodegradable and compostable. Free from chemicals, dyes, and additives. Sizes Round Plates: Common diameters range from 6 inches to 12 inches. Square Plates: Typically 6x6 inches, 8x8 inches, or 10x10 inches. Rectangle Plates: Popular dimensions include 8x4 inches or 12x6 inches.