The Petromax Helox mantle is highly stable, very durable and has an excellent light output. The extremely tear-resistant cord allows the Helox mantle to be easily attached to the burner. The U-shape of the glow mantle ensures that the glow mantle does not lay against the carburetor during the first flame-out. The premium glow mantle comes in the chic Petromax design, which has always stood for excellent quality and high-quality products. The Petromax Helox glow mantle is free of asbestos and non-radioactive.