Bamboo Studios 8-Inch by 5-3/4-Inch Rectangle Plate, 8-Pack, Natural Includes 8 of our 8-inch x 5-3/4-inch rectangle plate We use the outer bark or sheath of the bamboo plant, the sheath is collected, steamed, and pressed into shape No dyes are used to alter the color, the bamboo is as close to it's natural form as possible, further reducing envoronmental impact Microwave safe, disposable, may hand wash for extended uses (do not submerge in water), dry immediately after washing Please note that our plates are measured from edge to edge, there is a lip on the plates so please take this into account when deciding on size