What can I say about these blades that have not already been said. Well for 1 the aerodynamic shape has allowed me to shave while riding on the back of a Motorcycle at 100mph & the shave was magnificent. Was this the intention of Gillette when they created them? well I am not sure but I am here to tell you that my bald head is more than happy. So no matter what body part your gonna make smooth & hair free these bad boys will do the trick.