Colorless non-lead glass; borosilicate (PYREX®); black plastic; mold-blown, by machine; a) cylindrical bottle; machine finished rim; straight neck with raised ridges of glass for screw on lid; bottle rounds out from neck to shoulder; body four-sided, two sides wide than other two, "P/Y/R/E/X" molded into both wide sides, "OUNCES/8/7/6/5/4/3/2/1/A15" and measuring lines molded into one narrow side, "cc/240/200/150/100/50" and measuring lines molded into other narrow side; flat circular base with "MADE/IN/U.S.A." molded into it; b) cylindrical shaped ring; flat rim with "PYREX®" molded into it; serrated straight sides; no base; interior has raised ridges for screwing ring onto bottle.