Detail of bobbin lace ( renda de bilros ), cultural traditions from Northeastern Brazil - bobbin lace is a lace textile made by braiding and twisting lengths of thread, which are wound on bobbins to manage them - as the work progresses, the weaving is held in place with pins set in a lace pillow, the placement of the pins usually determined by a pattern or pricking pinned on the pillow. Bobbin lace is also known as pillow lace and bone lace, because early bobbins were made of bone or ivory. Bobbin lace is one of the two major categories of handmade laces.