The first and only NIOSH N95 approved on e adjustable cotton strap respirator gives you a quick fit. The single strap with Flexwing[R] and head harness provides an easier and more comfortable fit than two straps. The adjustable cotton strap is cool and comfortable against the skin. Dura-Mesh[R] shell resists collapsing, even in heat and humidity so the respirator holds its shape longer. Ventex[R] valve lets the hot air out faster so breathing resistance is reduce and workers stay cooler. N95 non-oil protection.