The Azor 5 Sensitive Skin System Razor has been designed to deliver you our closest, most comfortable shave ever. For best results, when your blades eventually feel dull and not as sharp as they were, replace with one of these Azor 5 approved cartridges. • 5 blade shaving surface for an ultra smooth shave. • Ultra thin blades deliver an amazingly comfortable shave. • Endurium nano coated for ultra long life.