This is a handmade pen case made from vegetable-tanned leather (nume leather) for storing three pens. It will protect your pens from scratches, prevent ink from staining your bag, and keep them from getting lost. 【About Undyed Nume Leather】 This is "kiji" leather, which is in its pure, untreated state. It is a material that allows you to enjoy the aging process, where the leather gradually changes to an amber color over time, a characteristic of nume leather. "Kiji" refers to the color close to the natural skin tone of the material, as it has not been dyed. "Neat's-foot oil" has been applied for moisturizing and protection, so the color will gradually change over time. Please enjoy the transformation. Please review the images and make your purchase with understanding. *Product Details* ◇ Thickness: Approximately 1.3mm ◇ Type: Cowhide, vegetable-tanned nume leather ◇ Texture: Firm ◇ Sewing: Machine-sewn ◇ Width: Approximately 5cm, Height: 15cm The color may vary slightly depending on your monitor, digital camera, and lighting conditions. 【Shipping】 Yu-packet Post Mini (mail slot delivery)