Slimmer design for a comfortable, close shave, that is ideal for tricky zones, like underarms and bikini zones (vs. Hydro Silk 5) 3 curve sensing blades with skin guards help prevent irritation Hydra-boost , with a touch of aloe and coco-butter, for smooth glide Pivoting 40 Degree cartridge for curvy, hard to reach areas Soft touch Handle for a comfortable grip