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). Large lens for a 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: 1998 (Class 1). Size: Medium.