Contains a number of nerve endings, none more senstive than the clitoris, an organ a part of the vagina that is formed from the same tissue as the head of the male penish.
Stretchable. Consequently, the wider the penis inserted, the more pleasurable for the woman. However, this is not an elastic wasteband, most women prefer a fairly broad diameter equivalent to that of a fairly thick cucumber.
Approximately six inches deep, sometimes more or less depending on the woman. Suffice to say, the value of a long penis dimishes after 8 inches or when lacking in depth.