The extremely lightweight 6000 series full face masks feature a wide field of vision, and low maintenance design for maximum comfort and simplicity of use.* Extremely lightweight - 450gms (without filters)* Wide field of vision* Polycarbonate lens is impact resistant to EN166:B* 3M Cool Flow Valve allows exhaled air to escape quickly and easily for improved wearer comfort* Soft, hypo-allergenic elastomeric face piece* Four strap suspension, easy to put on and take off* Speech transmission zone* Unique 3M bayonet filter fixing system* Standard: EN136