Material : Rubber Elevate 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.