18700001 (79290) Mocha x Beige, with side pieces, non-formaldehyde, compatible with floor heating, heat retention, soundproofing, 32-piece set, 6 tatami mats (approx. 6.6' x 9.8'), 10mm thick, large 59cm size, Class 1 soundproofing, joint mat, Tansu no Gen ‐ Mercari: Shop from Japan