Underwire bra casing with a plushy side, so your stitches sink invisibly into the casing. Can be used for underwires or 5 or 6mm plastic bone if you wish to use as bone channelling. Could be uses with metal and spiral bones without caps, (the caps make it very tight if your stitching is a little wide). Casing has a very slight stretch for curves. Available in 11mm and 12mm in selected colours.
