This is a limited edition glass mousepad with numbering up to 3333 pieces. (1201/3333) Purchased from a domestic retailer (Fumo Shop). The size is 490 x 420cm. It was used for about 3 days and has been stored since then. It is stored as shown in the third photo, and the included arm cover is unused. * Serial number photo attached in the 4th photo on March 10th.