Key cover made from 1.8mm thick black oil cordovan. Black thread was also used for the stitching. #elmway01 Size: Outer dimensions: 25mm (height) x 32mm (width) Inner dimensions: 23mm (height) x 23mm (width) Material: Horsehide (Cordovan) Oil cordovan, loved around the world. Since its establishment, through over 40 years of research and technical refinement, Shinki Hikaku Co., Ltd. has succeeded in producing world-class cordovan and continues to supply it. Shinki Hikaku Co., Ltd. is the only company in the world that consistently produces only horsehide and can tan cordovan. Shinki Hikaku's cordovan is tanned using a pit tanning method, where horse hides shipped from Europe by sea are soaked in pit tanks filled with tannin solution for a long period. Tanning agents mainly using mimosa are used, and the tanning process takes several months. After tanning, the base material needs to be aged for several months to allow the tanning agent to penetrate the core of the fibers, which is a very important process for producing high-quality cordovan. After the aging process, the dense fiber layer that exists only on the horse's rump, called the cordovan layer, is shaved off from the back, and then dyed, finished, and aged again. Oil cordovan takes about 10 months from the start of tanning to finishing. The unique transparency, luster, and depth of color of oil cordovan are created by performing a glazing process, where after the color is adjusted using dyes, chemicals are applied to the surface of the leather containing special oils, and then friction and smoothing are done using a dedicated machine. This process, which requires adjusting the strength depending on the part of the hide, requires the high skills of craftsmen and is a delicate task that can only be done by hand. Glazing creates the various expressions unique to cordovan, and no two are exactly alike. * Because horses sweat a lot, "dot patterns," which are sweat glands, may be visible on the surface. These are proof that the dense fiber layer and surface are reflected as they are. * Please handle with extreme care due to the very delicate surface that has been dyed. * Please be careful as it may stain or change the texture if it gets wet. Due to the nature of natural materials, the shape and thickness are not uniform. Natural scratches, blemishes, and wrinkles may also be included. Please consider purchasing after understanding the above points.