Personna Triflexx Blades Are Fully Compatible With All Gillette Sensor Handles As Well As Personna'S Triflexx Razor. Each Package Conains 8 Cartridges. Personna Triflexx Blades Are Noted For: Three Blades Aligned With Precision To Shave Close With One Stroke. Flexing Blades Adjust To The Contours Of Your Skin.Premium Blade Coating Allows The Blades To Comfortably Glide Across Skin. Micro Matrix To Prepare The Beard For An Incredibly Close Shave. Vitamin E And Aloe Lubricating Strip Reduces Skin Irritation.