Gillette's Sensor is the first shaving cartridge with independent spring-mounted twin blades and Gillette's Sensor Excel is the first shaving cartridge with flexible microfins. Enjoy the closest, most comfortable twin blade shave with Gillett's Sensor and Sensor Excel razor and cartridge refiils. The Sensor and Sensor Excel razor for men features self-adjusting twin blades that automatically adjust to every curve of your face.