Headgear- made of High strength Nylon. Ratchet Adjustment. Size of Window : 10cm x 4.4cm. Polypropylene impact resistant shell. Liftable welding lens to allow clear view, while restricting harmful dust particles. Protective Lens made of clear high impact resistant polycarbonate. It has a horizontal adjustment feature to provide the user the comfort to move the shell closer or further from the face. The height of the shell is also made adjustable by means of an adjustment provided on the harness above the head. The Head band of the harness has 4 adjustment positions for adjustment of the stop angle of the shield. The Ratchet adjustment at the nape allows easy adjustment of the harness. The Head band is provided with an anti-sweat comfort pad for increased comfort.