the BELO glass series by Frederike Martens is made of high quality mouth blown glass, which can be seen in small irregularities such as flow lines, small bubbles and minimally different, material thicknesses, which in turn allows the color to vary elegantly from glass to glass, the large volume glass bodies are colored through, the edge is cut and polished, which provides a perfect finish for the gentle silhouettes, water carafe with glass lid, hand washing is recommended