The ÖKO-PLUS ring binder insert in A4 size consists of 40 sheets and has a chequered structure with a size of 5mm, the insert has a thickness of 4mm, which provides sufficient space for writing. The sheets are environmentally friendly and are made from recycled paper that has been bleached to 100% chlorine-free. The ring binder holes are reinforced and fit into most standard ring binders. The insert is ideal for everyday use at school, university or the office and is an environmentally friendly choice for anyone who values sustainability.