The Gillette ProGlide Shield blade refills provide lubrication before and after the blades to help shield skin from irritation while you shave. Giving you a close shave, the microfins gently stretch and smooth skin while the microcomb guides your hair to the blade. The five antifriction blades gives you a shave you can barely feel and the Precision Trimmer on the back is perfect for hard-to-reach places and styling facial hair. Our thinnest, finest blades (first four blades) are designed for less tug and pull (vs. Sensor3).