What makes our kazoo different? The West Music Kazoo is manufactured with the highest-quality plastics (polypropylene) and pigments. They are molded in a state-of-the-art, medical quality injection molding facility in the United States. Cheaper, imported kazoos are made of polystyrene, which is brittle and breaks easily leaving sharp edges. Our kazoos are not brittle and do not break. It's all about the resonator...that little round paper underneath the 'child-safe' cap is what makes a kazoo work. Many kazoo manufacturers use cheap wax paper or cellophane to make the resonator.