[Brelio x Nagasawa Book Bound Planner Leder Crdovan Natural "B-Flap" Mini6(M6) Size / Bible Size] The highest quality "Leder Cordovan".It is said that it is difficult to produce this natural color unless it is a really good leather.And now, we have completed a system notebook limited to NAGASAWA, luxuriously using the highest quality "Leder Cordovan Natural". [What is Leder Cordovan?]Cordovan is called the "diamond of leather" and is characterized by a texture and deep luster that cannot be obtained with other leathers.It is a rare material that only a few companies in the world can tan.Among them, the aniline-dyed cordovan created by Ledel Ogawa is said to be the highest quality cordovan with a "transparency that draws you in".You can enjoy the aging process as you use it. The cordovan used in this notebook is a natural color that is difficult to produce unless it is a really good leather among the highest quality Ledel cordovan.This notebook is a system notebook that luxuriously uses the highest quality Ledel cordovan natural even on the inside. Ledel Ogawa (corporate website) There are two sizes: Mini6(M6) and Bible.Both rings have a large ring diameter of 20mm, so you can use them with plenty of refills in between. [Common specifications]- Material: Cordovan- Inside: Pocket x 2, pen holder x 1- Ring size: 20mm [Mini6(M6) Size]- Size: H148 x W120mm- Weight: 202g [Bible Size]- Size: H185 x W140mm- Weight: 321g