MAMO (High Absorbency) Mat Corner Stage Size is likely S, with a diameter of 20cm for the part that touches the stage, excluding the folded-over parts. This is a mat for a corner stage, purchased from Plus Kobo. Used for about 2 years for an elderly chinchilla, and has been washed at home. Only one set includes the metal fittings. The logo marks have faded except for the white ones, as they were used in rotation for washing. The mats will be bundled in a set of 3, wrapped in plastic, folded, and shipped via Takkyubin Compact or Yu-Packet Plus.