1Simply shake it with the rice and you can easily make the same size rice ball, more efficient to use it every day for school lunches. 2There's no rice sticking to your fingers and it's easy to clean, practical and wonderful kitchen tool accessory. 3Food grade polypropylene material manufacturing makes it easy to clean and convenient to use for rice ball making. 4Used to make rice balls.You just put the rice in 3 compartments, not too much, then close the lid and shake. 5About 17 x 7cm / 6.7 x 2.8in of the size, add more fun while cooking, simple to make cute rice balls.