The PVC tube and the cover of the hose are extruded simultaneously to ensure maximum bonding and high quality. Manufactured with a continuous high tensile strength polyester fiber circularly woven to provide reinforcement formulated with UV Protectors working temperatures - 5 Degrees F to 149 Degrees F this hose is very strong yet relatively lightweight and it resists twisting and kinking. LAY flat discharge hose is resistant to grease oil and many chemicals and acids.