Stanley Disposable N95 Welding Respirator Mask with Exhalation Valve and Boomerang Nose Seal, Box of 10 (RST-64007) Disposable mask is lightweight, humidity-resistant and latex-free for comfortable on-the-job protection Exhalation valve for heat reduction and easier breathing Two-strap construction and adjustable boomerang nose seal for secure, comfortable fit Suggested applications: welding, soldering, brazing, torch cutting, metal pouring, grinding, sanding, sweeping, dusty/hot operations NIOSH-approved N95 protection (TC-84A-3745) against solid and liquid particulates; box includes 10 respirators