Material : RubberElevate your celebrations with these stunning metallic dark silver balloons, adding a touch of sophistication to your events.Generous 40-Piece Set: Each package includes 40 balloons, offering plenty of materials to create stylish and memorable party decorations.Crafted from biodegradable latex, these balloons allow you to celebrate responsibly without harming the environment.Note: There might be slight color differences as a result of varying lighting and monitor effects.