This is a bag made from sumo fabric from the Hanaregoma stable. It has an inner pocket, convenient for organizing small items. It closes securely with a magnetic button. How about using it as an eco-bag or a sub-bag? A4 size fits. The inside and the contrasting fabric are navy oxford cloth. Interfacing is used. *There are some stitching irregularities. Please check the last photo. The contrasting fabric looks black in the photo, but it is navy. Size: Width: Approximately 26.5-35 cm Height: Approximately 28 cm Gusset: Approximately 9 cm Handle: Approximately 49.5 cm Please understand that this is handmade. It will be folded small for shipping. There may be unevenness in the fabric.