ELAN 4‑hole sew‑through buttons in 20 mm (3/4") size, supplied as a 2-piece card. The four-hole layout provides balanced stitching and excellent holding strength, making it dependable for trousers, coats, cardigans and bag closures. Use for garment construction, mending and craft projects across woven and knit fabrics. Install by hand or machine using matching thread. Colours and surface textures vary by style; choose a card that coordinates with your fabric and the buttonhole size.