Gillette Mach 3 Refill Cartridges 4 Comfortable, even on Day 30 Get a close comfortable shave even on Day 30 with Gillette Mach 3 razor. This is because it has 3 Blades with Diamond like coating that stay sharp longer to give you a great shave even on Day 30 PowerGlide Smoothness Gillettes 3 Blade Shaving Surface Technology with Anti-Friction razor blades gently glides across your face with incredible shaving ease and outstanding facial hair removal. With a shave this smooth, comfort is a slam-dunk. Pivoting Precision A forward-pivoting razor head with 3 progressively spaced blades and 10 Microfins on the cartridge helps deliver a smooth shave by gently following every curve of your face. A razor this comfortable will keep you on top of your game.