This ELAN 4-hole sew-through button provides a classic closure for shirts, sweaters, uniforms, and craft projects that need a flat profile. Each card contains 2 buttons at 25 mm (1 in), letting you replace missing buttons or finish a new make with a consistent size and spacing. Stitch in a cross or parallel pattern for strength and neat alignment; test needle and tension on a scrap, and remove or cover the button during pressing if needed.