Stanley RST-64013 Premier Plus MC/P100 Silicon Half Mask Respirator Equipped with Multi-Contaminant Cartridges/P100 filters High quality silicone facepiece includes a soft sealing flange with rolled edges for extra comfort Low breathing resistance makes it one of the easiest breathing respirators of its type Incorporates a perspiration port to reduce slippage and skin irritation Low profile nosepiece allows for compatibility with eyewear