Top quality is guaranteed- crafted exceptionally well. Made of high quality bamboo material, lightweight, durable, all natural, no chemicals and glues. Size: 9.5" x 9.5". Each bamboo roller mat is made from woven with cotton string, there are no splinters and no unraveling of the cotton string stitching. To extend the lifetime of this product, please make sure it is completely dry after use but don't expose it to high heat. No extra tools are needed, just add rice or other vegetables in the sushi mat, then roll it, and you will get your favorite sushi roll, non stick, easy to use, easy to operate for housewives or beginners. Hosting a sushi party is a fun, hands-on culinary experience that your guests will never forget! You can also cook sushi rolls with your children. It'll teach your kids something new, and develop the fine motor skills of their hands. A great chance to present to your friends or loved ones with something special. Sushi-making is a new experience, one that everyone should try. A compact, unique and useful gift that makes your friends always be cherished! Note:Due to different production batches, round bamboo chips and flat bamboo chips are shipped randomly, and their functions are the same.