With sensitive skin in mind, the Gillette Mach3 Sensitive blade refill is designed to help fight irritation (vs. Mach3) with an enhanced lubricating gel strip (vs Mach3) that glides providing a smooth shaving experience. With Open Blade Architecture, rinsing your razor is much easier. The three DuraComfort blades feature sharper blades (vs. Sensor2). Soft microfins gently smooth and stretch skin preparing hairs to be cut. All Mach3 blade refills fit all Mach3 razor handles. Each blade refill lasts up to 15 comfortable shaves.