The Trend Air Stealth is a new generation P3R half mask, ergonomically designed with low profile design. The mask is rated at APF20 with an Assigned Protection Factor 20. Offering less breathing resistance, less clogging pressure and inward leakage. The mask protects the user against airborne particles, oil aerosols, mist, welds and fumes. Sold in 2 sizes: Small / Medium and Medium / Large.