Made in Japan, heavy tannin-tanned leather. Thickness is approximately 1.5mm. "Heavy tannin" is a tanning method similar to tannin tanning, using a small amount of chrome. There isn't much difference from nubuck leather, and some tanners and leather shops may sell heavy tannin as nubuck leather. This is because methods other than full vegetable tanning use a small amount of chrome. This leather has a mottled color tone with shades, creating a vintage atmosphere. It's suitable for antique-style and retro works, so please create wonderful pieces. This is a great deal with the mori-mori scrap set, so why not stock up? Heavy tannin tanning, nubuck leather, squeezing process, wet forming, water forming, leathercraft, handmade,