The CleanSpace CST Full Face Mask is designed for use with the latest model CleanSpace ULTRA and CleanSpace PRO PAPRs. It is suitable for heavy, long term work or exposure. Used with the revolutionary CleanSpace PAPR: light weight, no hoses or belts Full face masks available in 2 sizes to facilitate a good seal and a comfortable fit Materials: Soft silicone cushion, nylon clips and polycarbonate (exhalation valve) Mask Fit Test adaptor available for TSI PortaCount fit testing Easy removal for cleaning Transparent and facilitates communication