I had a Francebed Z-HI mattress many years ago, and was looking for a similar one. I found this EXエッジMCハード for a very reasonable price, and decided on this. The Made-in-Japan quality is fantastic, and it's a solid mattress. It's very hard, and not for those who like soft mattresses. This is perfect for a good night's sleep, and my smartwatch tells me I'm getting a lot more deep sleep than with my previous mattress. Very nice after a long motorcycle ride....