ELAN shank buttons are sew-on closures for garments and accessories where you want a smooth front and a little space between button and fabric. Each card includes 5 button(s) sized 12mm (1/2 in), suited to shirts, cardigans, kidswear, and light outerwear when you need a matching replacement. Sew through the back loop with sturdy thread, then test-button once before trimming ends to help prevent loosening in wear.