50 yard x 1/2 inch polyester boning for sewing - sew-through low density maxpro boning for corsets, nursing caps, bridal gowns, and more maxpro arts, crafts & sewing are you looking for an easy way to give shape and support to your garments, costumes and crafts? maxpro polyester boning is a sew-through boning that provides shape and support for garments, costumes and crafts. it is made of woven nylon rods and can be stitched directly to fabric, without a casing. our polyester boning are super flexible with “just-right” stiffness so you can easily cut with regular scissors, or zig-zagged. it can even be washed and dry cleaned without much change to its stiffness. important! this comes rolled so you need to flatten it with an iron before stitching.