Whalebone, also known as BALEEN, is a material derived from the BALEEN plates of certain species of whales. It has been used for centuries in a variety of applications, including corsets and stays. BALEEN is a fibrous material that is strong yet flexible, making it ideal for use in clothing and other items. Stays are pieces of whalebone or other stiff material used to support the shape of a garment, such as a CORSET. Whalebone has been used in corsets since the 16th century, providing structure and support while still allowing for flexibility and movement.