Made of polypropylene with 6 rectangular cavities, it is non-stick, easy to clean and unmold, reusable. The mold comes apart in two pieces, one part is a mold and the other is a lid. Foldable design to save space. It is easy to use, just put the cooked rice into the pan, then use the lid to press it into the rice until until the mold is closed, turn the mold upside down and push out the molded rice ball. 6 rectangular rice balls can be created at a time. It's really simple and quick, you can cut and cut the size of the seaweed to match the size of the rice ball. Perfect kitchen tool for making rice balls for sushi, for make delicious onigiri sushi for your family and kids. Ideal gift for your family and friends.