The "Roroma Leather Shrink" used in this pen case is made from domestic steerhide (adult cowhide) that has been vegetable-tanned twice. It is then thoroughly infused with oil and wax, and dried over time. Furthermore, it is drummed to create natural wrinkles and irregularities, giving it a unique, unpressed texture. This natural appearance is its charm. The more you use it, the more it shines, the deeper its color becomes, and it takes on a jewel-like luster. This is a very labor-intensive domestic cowhide, and you can enjoy its deep luster and supple feel the more you use it. ✨ Key Features Heavy and elegant texture due to double tanning and wax finish Unique texture and three-dimensionality created by natural wrinkles Aging that allows you to enjoy the "growth" of the leather as it shines more with use The bottom has a gusset, so it can hold more than it looks. Also, it is lightweight and easy to handle. 【Color】It looks gray, but as you use it, the wax will penetrate the leather, and it will become black. 【Size】Height: approx. 6.0cm × Width: approx. 20.0cm × Thickness: approx. 3.5cm (gusset part) ※ Pens and other items used in the photos are not included. ※ Due to the use of natural leather, there may be original scratches and wrinkles. We hope you enjoy it as a unique characteristic of natural leather. ※ The actual product may look slightly different depending on the way the photo is taken and the way the light hits it. ※ All products are handmade, so there may be slight variations in size, sewing, and stamping. Please refrain from purchasing if you are sensitive to these details or if you are looking for perfection. ※ We do not accept any exchanges or returns for the above reasons or for the buyer's convenience. Pattern/Design: Other