In North and South America, about 25% of the market prefers the vertical and flat folded style respirator, and this number is growing each year. Some individuals prefer the vertical and flat folded style as it is more flexible around the edges and can adapt to the wearer’s facial features, and in some cases, more easily than the cone style respirator. Vertical fold masks fold easily when they are not in use and fit well with goggles or helmets so they are convenient for many different types of worker situations.