A4 size to accept 2 new size Post Office envelopes, one above the other on each page. Padded luxury binder with D ring mechanism contain 10 polyprotec leaves to hold 40 covers. Binders will accept up to 30 more leaves. Completely safe and secure for your valuable covers. Each pocket size is 230mm x 130mm 4-Ring Binders finished in red, blue or green leatherette pattern