This time I brought the 'DIY Hyosung Tile Carpet Mat' from Oneul-ui Jib. First, the size is 50×50 cm, so I recommend calculating the area carefully when installing on the floor before purchasing. There are 16-piece boxes and 8-piece boxes, so calculate in advance and buy accordingly.
The texture isn't as soft as I expected, but it's not stiff either — it's just a middle-of-the-road feel. Also, you have to attach fixing stickers at every place where the tiles overlap. I recommend calculating this quantity carefully or drawing it in CAD beforehand. If you can't use CAD, it's easier to estimate by thinking that "one sticker goes into each corner where four tiles overlap."
I bought extras, planning to cut pieces to fit exactly at the ends. A downside is that there's some shedding when first opened, so I strongly recommend vacuuming at least twice after installation. Finally... don't do it alone. It's really tough (haha). Still, after laying everything down it turned out exactly the way I wanted, so I'm very satisfied!