RZ MASK The M1 Mask is the pioneer of the RZ Vision. A clean, classic look with all the technology you’ve come to expect from RZ Industries. Featuring a durable, 4-way stretch neoprene body that delivers maximum performance in those tough duty situations. Dominating protection and performance through its 99.9% replaceable Active Carbon Filter. The M1 is your general purpose, tough-duty air filtration mask.