Fits all GilletteLabs razors: use with GilletteLabs with Exfoliating Bar and GilletteLabs Heated Razor Incredible comfort and closeness: thanks to Gillette’s best blades (first 4 blades) Seamless efficiency: Gillette’s sharpest blades (first 4) for a smooth shave with less tug and pull (vs. Sensor3) Ultimate precision: includes a trimmer on the back for hard-to-reach areas and precise edges Environmentally friendly: these razor blades are fully recyclable with Terracycle