Colorspan 355g/m2, A4 folder The folder is suitable for perforated A4 documents. It allows filing and presentation of up to 350 sheets (80g). This loose-leaf binder is made of Colorspan, a cardboard of unique quality, homogeneous and colored, without varnish and without the addition of plastic material. It is more durable than any other cardboard in daily use. This loose-leaf binder is also very strong and durable with its 355g/m2. The pre-printed lid makes it easy to mark the contents. FSC certified. The loose-leaf binder is manufactured in our factory in Germany.