The Renz Aquarelle Colour Thermal Binding Covers are made of a coloured linen structured cardboard (240 gr/m] and the front with a matte transparent plastic. 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.
