Full Vegetable Tanned Leather Insoles This is a single layer of leather, approximately 1.0mm thick, that won't significantly affect shoe size. Although unused, it has been stored at home, so it is being treated as "Like New." The material is full vegetable-tanned cowhide from Tochigi Leather, so the color of the leather will change over time. * The original leather color was skin-toned, but it has now changed to an amber color. Also, because no pigments or other paints are used, it has high moisture absorption for sweat and humidity, and is an insole that is less likely to get stuffy, but the surface of the leather is flat, so it may be slippery for some users. There is a characteristic stiffness of tannin-tanned leather initially, but it will soften with use and conform to the shape of the wearer's foot. This leather is dyed with natural leather dyes, so there are variations in appearance, and blood vessel marks, scratches, and black spots cannot be hidden, so please be aware of this. 【Material】 Cowhide 【Color】 Beige 【Dimensions】 Free size, so please cut it to fit your shoe size. The size of this product is 275mm x 90mm. 【Instructions for Use】 1) Cut the cardboard slightly larger than the size of the shoes you will be using. 2) Adjust the size and shape by gradually cutting the cardboard to fit the shoes you will be using. 3) Cut the leather material based on the adjusted cardboard. 4) Place the leather in the shoe with the smooth side facing up. * A plain white cardboard will be shipped together with the insole. (See images 7 and 8) Please note that the red tag of Tochigi Leather shown in the photo (see image 6) will not be sent. Packaging will be simple. Please note that this product is also listed on other sites, so please forgive us if it sells out. Thank you for viewing.