Nakpunar Non Elastic Bridal Button Loops (12", Black) Nakpunar Brand 12" long Black Non-Elastic Adjacent Bridal Button Loop Trim Works with 3/8", 7/16", 1/2" buttons and corset closure. Perfect to sew at the back of the wedding dresses, attach train to wedding gown, attach bridal comb to veil. You can replace zipper, buttons with button loops to create corset closure, adjustable wedding gowns. Available in White, Ivory, Black. If you buy more you'll get one continuous length.