Twin Filter Half MaskTwin Filter Half Mask Fully adjustable four point cradle suspension ensuring an effective facial fit Low profile angle filter design for minimum visual impairment Durable thermoplastic rubber mask for superior fit to most face shapes Contour moulded nose for fit with glasses and goggles Low resistance exhalation valve to reduce heat and moisture build up Able to be worn under most welding helmets Quick and easy filter cartridge connection Sold