Large Capacity: A4 size, larger than A4 plastic envelopes. Holds up to 2.8'/7cm, 1000 pages large capacity, with canvas gusset. Expandable file folders can help you easily carry large books and documents. Buckle & Handle: This buckle is taken from the old version with a twist button, which is more durable and convenient to use. The strong and portable handle is ideal for business trips. High Quality: Made of non-toxic and environmentally friendly quality polypropylene, recyclable. Durable poly is tear-resistant and water-resistant. Ideal for long-term storage of your important documents. Wide Application: These large portfolio bags can provide convenient and secure storage of important project files, teaching materials, letters, stationery, class colors, memos and other office supplies, etc. They are classified and organized. Size: 33x24x5.5cm