the silicone shell perfectly replaces the original shell; it wraps correctly the phone without presenting a crippling congestion and gives confidence regarding protection if dropped (but obviously not tested ...) contrary to what is stated elsewhere, the buttons on the sides remain perfectly reagents; the stylus that comes with is useless in my opinion and the plastic film to the screen is not great, very difficult to implement without residual bubbles. In the end a good product anyway especially at this price