The binding material is made of 2.1 mm thick cardboard and weighs 1290 gsm. It participates in the recycling and waste recovery system. It is covered with an ecological polypropylene sheet (100μm) with a canvas structure. It features a white paper label on the inside.

Characteristics:

• High-quality lever with a press.
• Replaceable double-sided spine label.
• Reinforced finger hole.
• Control number under the lever mechanism.
• Spine width: 50 mm.
• Dimensions: 50x320x285mm.
• Color: black.
• Format: A4.
• Type: lever.
• Series: Master.