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, thickness 50mm, weight 8.7kg I think it can withstand sets for those who are serious about bodybuilding or weight training. It's also good for adding to what you have or creating space to suit your environment. No price reductions or holds. Thank you very much for browsing this item. You can buy it immediately. This account only deals with 100% genuine items. If you live in Okinawa or a remote island, please be sure to comment before purchasing. (We charge separate shipping fees if the amount exceeds the basic shipping cost.) We may significantly reduce the price on weekends, so please "like" any items you are interested in. If you have a preferred time for delivery, please let us know after purchase. We will accommodate anonymous shipping, so please comment. Also, the phone number of the delivery destination is no longer displayed. If you need to be contacted during delivery, please provide your phone number separately. Thank you. Regarding shipping, you can usually purchase directly, but sometimes we may be unable to ship for a few days due to sudden business trips. If you are in a hurry, it would be helpful if you could comment beforehand. Thank you.