... .Material:flame retardant outer shell.2.characteristic:high temperature,heat resistant, anti abrasion, shockabsorption and fire proof, ... Helmet detailed information1.Material of outer shell: high temperature polyetherimide(PEI) plastic. High intensity, electric shock prevention ... , pierce resistance, flame-retardant, be able to endure heat.2.Goggle: excellent, light transmittance, high definition, anti ...