Lubrication before & after the blades, shields from irritation while you shave Gillette’s thinnest, finest blades (first 4 blades, same as ProGlide) for less tug and pull (vs. Fusion) 5 precision blades, helping reduce pressure per blade for a comfortable shave (vs. Mach3) 1 razor blade refill equals up to one month of shaves Fits with any Fusion razor handles