What is a turtleback book binding?

A turtleback book binding refers to a specific style of binding where the spine is rounded and often reinforced, resembling the shape of a turtle's shell. This design enhances durability, making it suitable for Children's Books and library copies, as it allows them to withstand frequent handling. Turtleback bindings often feature a protective cover that may be more rigid than standard hardcover books, ensuring longevity and resistance to wear and tear.