• 3M 6500 Series Mask: offers comfort, durability, and stability thanks to its lightweight silicone face seal, providing more comfort during long work shifts. • QL Quick-Release Mechanism: allows easy use of the mask without the need to remove the safety helmet or visor, ideal for entering and exiting contaminated areas. • Adjustable head harness: provides optimal fit and comfort with very durable straps adjustable in 3 sizes. • Bayonet connection: flexible system to connect a wide range of filters for gases, vapors, and particles, with visual identification of the anchoring point to facilitate its use. • Cool Flow Exhalation Valve: increases user comfort by reducing heat and humidity, making breathing easier with less exhalation resistance. • EN 140:1998 Certified: tested and certified according to European standards.