The ELAN 4-hole sew-through button provides a balanced, secure stitch layout for garments, uniforms, and craft projects. This card includes 2 buttons in 21 mm (7/8 in) diameter, ideal for replacements and multi-button plackets on shirts, knitwear, and accessories. Choose a stitch pattern that matches the fabric weight, and reinforce stress points so the button stays aligned through regular wear and laundering.