Please use a comparison object for size. The mat is 1 cm per square. If you purchase multiple items, please request a combined order. Items that are in stock can be added. Please feel free to comment (*^^*) About combined discounts [We offer a 50 yen discount from the second item onwards.] Discounts cannot be applied after purchase is complete. Please note that due to being made overseas, there may be scratches, uneven coloring, distortions, etc. We appreciate your understanding. m(._.)m We plan to ship via standard mail. It is possible to change to shipping with a tracking number for an additional 150 yen. *Samples are not included.