KF94 masks are similar, except they provide 94% filtration. There isn't much of a difference between 94 and 95% filtration, and the fit is a crucial component in how effective these masks are. KF94 masks are also different in shape than N95 masks. According to the manufacturers, it has a boat-style design with a wide band that wraps around the centre of the mask. N95 masks, on the other hand, are either cup or duckbill form. Because of its design, the KF94 mask hits a significantly wider range of faces.