MSA Advantage 4000 Small Size Single Port Facepiece without Adapter is made of silicone for added comfort. Facemask includes a net head harness and a standard nosecup to have reduced fogging in low-temperature or high-moisture environments. It is used in agriculture, chemical construction, electric utility, mining, nuclear oil and gas, paper & pulp, sanding, grinding and welding applications. It is available in three standard sizes to ensure secure fit. It is compatible with air-purifying respirators, supplied-air respirators and powered air-purifying respirators.