The Belo range by Frederike Martens is made from high-quality soufflé veneer. This is reflected in the small irregularities such as the lines of color, small bubbles, and slight differences in the thickness of the material. The color of one piece also varies from another; the bodies of large-volume items are tinted in the mass, while the stem remains clear. The rim is waisted and polished, presenting a perfect finish for double silhouettes. Hand washing is recommended.