The back of the cartridge has a truly innovative Precision Trimmer—a single blade built into the back of the cartridge, allowing you to easily trim sideburns, shave under your nose, or shape facial hair, such as goatees, soul patches, and chinstrap beards. A soft touch, secure handle that intuitively rolls through the fingers allows for an easy 180-degree transition between the shaving surface on the front and Precision Trimmer on the back. Gillette Fusion Phenom Manual also contains a Flexible Comfort Guard that follows the contours of your face and pulls your skin taut for a comfortably close shave. Additionally, Gillette Fusion Phenom Manual features an Enhanced Indicator Lubricating Strip that gradually fades to white when you are no longer getting your optimal shave, so you always know when to change the blades. Other Gillette breakthrough technologies featured on Gillette Fusion Phenom Manual include spring-mounted blades and progressive blade geometry. These technologies combine to create Gillette's most comfortable manual shave.