Welding Helmet/Bladk Helmet -The shell adopts excellent insulation board, light weight,PP,Fireproofing; -According to the human skeleton and mechanical concept design, make your head hoop work more comfortable; -Exterior line is fluent, euramerican style, blend in the latest design concept; -The goggles piece before and after filter adopts advanced PC, high temperature resistant, never viscous slag, and not easy scratches; -Stepless Adjustment,Solar Cells ,Two AAA Batteries.