This quality selection of portfolios from Mapac has a neat hi-tech "bubble" finish. It is a single piece construction with a polypropylene edge binding. The portfolios have a heavy-duty 4-ring mechanism along the spine and an internal pocket on one side. There is also facility for a shoulder strap (sold separately).
The Graduate Portfolio is available in sizes A1, A2, A3 and A4. Polypropylene sleeves are also available separately here (not included).