The Wilkinson Sword Hydro 5 Sensitive Refill Pack contains 4 replacement cartridges for use with the Wilkinson Sword Hydro 5 Sensitive Razor. The Hydro 5 Sensitive Razor is a dermatologist-tested razor system, ideal for people with sensitive skin. The water activated hydrating gel reservoir consistently lubricates throughout each shave with added aloe vera to help reduce irritation and redness for all-round comfort. On each cartridge you'll find innovative skin- guards across 3 ultra-glide blades, helping to smooth the skin's surface, preventing it from getting caught between the blades as they pass over the face - considerably reducing irritation. Also contains a handy flip trimmer, where a simple flip of the thumb flips the gel reservoir back to expose all five blades, helping to trim tight spaces with ease. Pack contains 4 x cartridges. Contains functional sharp edge. Keep out of reach of children. Always read instructions before use.