FusionFlo is an advanced filtration system that is unique in many ways. Our design revolves around three critical factors: superior filtration, enhanced breathability, and excellent fit of the mask. Extensive research and careful design have resulted in a mask that offers comfort, which is also lightweight and offers protection from external pollution. FusionFlo's distinctive shape and unique concave design with a dual valve system clearly offer an eye-popping, fashion-forward look. Role of the filter The filter plays an important role in providing user protection. Breathing without the mask is different and breathing with our mask on is a healthier experience because before the air reaches your lungs, it passes between five layers of protection. The technology used in our masks has been thoroughly researched by our R&D department and consists of the following layers: Outside PP Layer - Outside filter wrapping in a durable finish 1st Electro Charged Filter Layer - Filters larger PM10, pollen, and other allergens 2nd Electro Charged Layer - MeltBlown Fabric Filters smaller PM2.5, dust, and bacteria 3rd Electro Charged Layer - Meltblown Fabric Filters smaller PM2.5, dust and bacteria Inner Hydrophilic PP Layer - Inside hydrophilic filter for sweat absorption with the ultra-smooth skin-friendly finish Optimum Performance = A Great Fit Along with the filter performance capability, the fit of the mask plays an important role in providing protection to the wearer. Along with comfort, our masks also ensure that it's sealed around all edges so as to ensure air travels only via the filter. Our masks are adjustable in accordance with your requirement, thus ensuring the right fit with: Adjustable nose pin to avoid leakage and to ensure the right fit. For extra fit lock the adjustable head strap at the back of the head and relax your ears.