This disposable respirator offers the same great protection as our classic 8210, N95 particulate respirator but with the addition of the proprietary 3M Cool Flow valve. It is ideally suited for many work settings that involve heat, humidity, or longer periods of wear. The 3M Particulate Respirator 8210V, N95 is NIOSH approved and helps provide reliable worker respiratory protection against certain non-oil based particles. The proprietary 3M Cool Flow valve is designed for easy exhalation and reduces heat build-up inside the respirator to help keep the wearer more comfortable. Testing shows the atmosphere inside the 8210V respirator with a 3M Cool Flow valve is on average 5.5° F cooler than a similar respirator without the valve.