Rigilene Boning - White is a 100% polyester sew in, light weight boning available in white or black. It is made for projects that need extra support and shape like eveningwear, theatrical costumes, strapless Bridal gowns, etc . Rigilene boning is flexible and durable, easy to sew on the edges, down the center or across the boning by hand or machine. Wash or Dry clean without loss of stiffness. 1/2" wide. Priced per yard.