This is a bamboo steamer, round with a handle in the center. It was soaked in saltwater and boiled before use. Used twice. There is one chipped area, but it works without any problems. The height is about 4.5 cm, but about 5 cm including the part that goes inside. Please refer to the photos. Carbonized for resistance to mold and deformation. The bamboo rope weave adjusts the moisture level, allowing you to gently steam food evenly at a low temperature. Thank you for looking.