Ralph physical description in lord of the flies?

In chapter one: the Sound of the Shell Ralph is described initially as the boy with fair hair. Later in the chapter a more detailed description of Ralph appears, and I quote.... He was old enough, twelve years and a few months, to have lost the prominent tummy of childhood; and yet not old enough for adolesence to have made him awkward. You could see now that he might make a boxer, as far as width and heaviness of shoulders went, but there was a mildness about his mouth and eyes that proclaimed no devil.