What materials does it primarily consist of?

It is constructed from fiberglass and high-temperature-resistant silicone cloth. The jacket consists of three layers: an inner layer, insulation layer, and protective layer. It can withstand working temperatures of up to 650°C. This material offers several advantages, including excellent insulation, water and oil resistance, multi-layer protection, corrosion resistance, ease of cleaning, flexibility, and a pollution-free, neat appearance.