A cooling device may include a fluid inlet manifold, a case body, and a fluid outlet manifold that are formed of a molded polymer composite material. The fluid inlet manifold may include a fluid inlet channel and a fluid inlet reservoir. The case body may include a plurality of cooling channels extending from a first surface of the case body to a second surface of the case body. The cooling channels may fluidly couple the first surface of the case body to the fluid inlet reservoir. The fluid outlet manifold may further include a fluid outlet channel and a fluid outlet reservoir. The cooling channels may fluidly couple the second surface of the case body to the fluid outlet reservoir. The fluid inlet channel, cooling channels, and fluid outlet channels may include a cross-section topology.