The Advocate covers are made fully of coloured linen structured cardboard with or without a front window. The size of window is 100x75 mm with corner radii 1mm. Window position is fixed in the centre and 55mm from top edge.
All covers come with a strip of glue pre-attached to the spine and also pre-scored hinges both in front and back of the cover. As a rule of thumb, 10 sheets of 80 gr/m2 paper can be bound for each mm of spine width.