You can use the patented Fastbind Manager DuoStrips with the new generation of Fastbind binders (Secura, Elite, Optima and Ultra). Fastbind Duostrips allow you to bind with two separate covers (for front and back). You can even create a nice looking binding without any cover.

DuoStrips are available in four standard colors: black, dark blue, dark red and white. The three standard sizes allow you to bind up to 13, 26 or 39 mm thick, in A4/Letter format.