This is a bag from ultimaTOKYO. It can be used as a shoulder bag, handbag, or crossbody bag, offering 3-way functionality. The bag can accommodate A4 size documents and has a pile fabric interior designed to hold a 10.5-inch tablet, etc. The back is made of mesh fabric. The size is approximately 350mm (height) x 230mm (width) x 50mm (depth), measured by a non-professional. I used it for about a year, mainly on weekend outings. While there is a sense of use, there are no tears, and I think it can still be used for a long time.