Thank you for viewing. I believe the regular price was around 4400 yen per piece. I don't know the manufacturer. With its overwhelming thickness, soundproofing, and impact resistance, it can withstand high-weight sets. It's also heavy, so it's less likely to shift. Some pieces have signs of use. (The item in the second image has the most damage.) You cannot choose the mats; they are randomly selected and packaged in sets of three, so please understand. Three pieces were the limit due to weight. They are sold in sets of three. There are 23 pieces remaining in stock, so please comment if you need more. 50cm x 50cm, 50mm thick, weight 8.7 kg I think these can withstand even sets for serious bodybuilders and those who do weight training. You can also add to your existing setup or create space to suit your environment. Customers in Okinawa, remote islands, and other areas where shipping costs are higher than usual will be charged extra shipping fees, so please be sure to notify me before purchasing.