Self‑cover nylon buttons that assemble by snapping front and back parts together around a fabric circle. Size 30 (18 mm) gives a bolder look on jackets, bags and tufted cushions while remaining light and washable. Ideal when you need perfectly coordinated closures or decorative dots without the visibility of metal. A dependable choice for upholstery accents and fashion details where easy, tool‑free assembly keeps production moving for small runs and at‑home makeovers alike.