Softcover and paperback, also with flaps
Soft cover (left) does not have a hard case; the cover is printed on coated board with a basis weight of 240 grams.
Paperback (right) has a simpler paper and a slightly thinner coated board with a basis weight of 220 grams. We optimise the choice of material to make as cost-effective a product as possible.
Soft cover and paperbacks can also include flaps.