Adopt environmental bamboo material Fresh, healthy, delicious & nutritious sushi. Smooth and exquisite for the suface after repeatedly polished ,safety and healthy. Phyllostachys pubescens material, Non-toxic and odorless safe and healthy problem. The bamboo mat is bound together with twine and provides a non-stick surface for rolling. Place a piece of seaweed on the mat, add your rice and other desired ingredients, roll and serve.Wangsansan