Bobbin lace is a lace textile made by braiding and twisting lengths of thread, which are wound on 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, because it was worked on a pillow, and bone lace, because early bobbins were made of bone or ivory. Bobbin lace is one of the two major categories of handmade laces, the other being needle lace, derived from earlier cutwork and reticella.