silicone keybard skin Cover review : this item be very reasonably price and quicky deliver . it fit perfectly , and would certainly keep unwanted crumb or -- heaven forbid ! -- liquid from touch my keyboard . unfortunately , it also make it necessary to increase pressure while typing to a uncomfortable extent . after struggle with it for two day , I give up and remove it , grateful that the experiment do not cost too much . I now type as easiy and quickly as before , bring out my little brush to clean the keyboard every few day , and keep liquid far from the laptop .