Gillette MACH3 Base Razor for men with stronger-than-steel blades stay sharper longer (vs. Sensor3). Each razor blade refill is engineered to last for 15 comfortable shaves. Men's razor cartridge features sharper blades (first 2 blades vs. Sensor3). Lubrication strip glides to help protect your skin from redness. Advanced skin guard helps stretch your skin, and prepares your hair to be cut.