Classic ELAN two-hole buttons sized 15 mm (5/8 in) for shirts, cardigans and light outerwear. The 3-count card covers repairs, replacements and matching spares. A low-profile round shape lies flat, and clean drillings help stitches seat neatly for secure hold by hand or machine. Measure an existing button to match diameter, then test stitches on a fabric scrap to confirm spacing and tension before final sewing.