The Gillette Mach3 Men's Razor Blades give you the reliable Gillette shave with comfort and precision. Each razor blade refill is engineered to last up to 15 comfortable shaves so you can get the most of every shave. The Gillette Mach3 razor blades have stronger-than-steel blades that stay sharper longer (vs. Sensor3). Along with durability these Gillette razor blades feature a lubricating strip that glides to help protect your skin from redness while soft microfins gently stretch and smooth skin preparing hairs to be cut for the optimal shaving experience. A Lubrastrip is a thin strip that sits at the top of the blade releasing lubricants while you shave to produce a great glide. When you are no longer getting an optimal shave the Lubrastrip fades to white indicating that it might be time to change the blade. Mach3 features three DuraComfort blades and an Open Blade Architecture for easy rinsing to keep your razor clean and performing its best. All Gillette Mach3 razor blades fit all Mach3 razor handles.