Hard Cover
Also known as hardback or case bound that provides a high level of durability. A hardcase is a book bound with rigid protective covers, typically of cardboard covered with cloth, heavy paper, or sometimes leather. It is the ultimate in children's book binding, reference books, children's books, coffee table books and such...
Soft Cover,
Perfect and PUR Binding
Using adhesive to glue the pages to the spine of the book, this flexible yet durable option is ideal for literary books and magazines.
The key difference between perfect and PUR binding comes from the type of glue. PUR is 40-60% stronger.