This is a roll pen case from sot (ソット). I purchased it at a physical store a long time ago. Since it's an older model, the logo is likely different from the current ones. The color is dark brown. There are four pockets. Each pocket is approximately 5cm wide, though there are slight variations (see photo 16). Measurements when laid flat: Body: 19cm (height) x 18.5cm (width) Pockets: 7cm (height) x 5cm (width) String length for rolling: Approximately 47cm