Dritz Flexicurve™ Polyester Boning #569-9 - White #66. Boning provides lightweight, flexible shape and support and yet is comfortable to wear.  Use it for support to strapless garments, such as bustiers, swimwear, theatrical costumes, evening wear, and soft toys Can also be used for bras, corsets, hats and handbags. Flexicurve Boning can be hand or machine sewn into projects and is both washable and dry cleanable. 100% Polyester. 1/2 inch wide, non-covered. Priced per box of 22 yards.  Use the Dritz Boning Caps to cover and protect the ends of the boning.  Dritz 12 Boning Caps in Black #571-1  or White 571-66.  https://www.voguefabricsstore.com/Dritz-12-Boning-Caps-For-Flexicurve-Boning-White-66.html