Knit tubular protective sleeve and method of construction thereof

A knit sleeve for providing thermal protection about an elongate member, comprising:

• a knit inner wall with opposite edges extending lengthwise between opposite ends;
• a seamless, circumferentially continuous, tubular outer wall knit integrally to said inner wall, said circumferentially continuous, tubular outer wall bounding a central cavity that extends lengthwise along a longitudinal central axis between open opposite ends of said seamless, circumferentially continuous, tubular outer wall;
• said opposite edges of said inner wall being wrapped toward one another to form the inner wall as being a wrapped inner wall;
• and
• said seamless, circumferentially continuous, tubular outer wall being everted about said wrapped inner wall to circumferentially envelop at least a portion of said wrapped inner wall such that said wrapped inner wall is at least partially disposed in said central cavity, with said opposite edges of said inner wall extending generally parallel to said longitudinal central axis.