The Superior Labor B6 Bridle Leather Notebook Cover available in yellow, black and rose is crafted from vegetable-tanned bridle leather that becomes more lustrous with use. The width of the inside insert allows for the inside paper to maintain a level surface against the cover. Dimensions: 5.7\” (14.5cm) x 7.7\” (19.5cm) Materials:Vegetable Tanned Bridle Leather Fits a standard B6 notebook, e.g. Galen Leather Cover: Pink Bridle leather is the way that a piece of leather (cow hide) is finished at the tannery. It has both sides, the flesh and grain, stuffed with greases and finished with wax. This is an intensive labor process which creates a surface that is smooth to the touch. Leather bloom, the natural white powder on the surface, enhances the organic patterns formed during the crafting process.Because each case is individually crafted from organic leather, no two cases are the same. There will be individual differences in the color, thickness, and texture of the leather. Note: With use, the leather will soften and darken, transforming into your own unique belonging that protects your favorite notebooks.