ELAN sew-through buttons are a simple, everyday fastening for garment sewing, knitwear, and replacing missing buttons on ready-to-wear pieces. This card includes 3 buttons measuring 15 mm (5/8 in) in diameter, and the flat two-hole profile sits close to the fabric for clean buttonhole alignment. Sew on by hand or machine with thread suited to your fabric weight, and add a small thread shank if you need extra clearance over thicker seams.