Gillette Mach3 razors feature blades that are stronger than steel and last up to 2 times longer than a disposable razor. Lubricating band. To protect against irritation and discoloration when shaving is no longer optimal. Mach3 shaver - lubrication strip. 10 microtensors that protect the skin. The microtensioners stretch the skin before the blades pass, for a closer shave.