Our Vintage Glass Surface has a Straight Prism Texture, Unique Origami Style, Full of European Vintage Flavor. Round Cup Mouth, Cup Mouth & Cup Body Forming, Feel Comfortable, Cup Bottom Thickened Design, Anti-scalding Heat Insulation, 100 Degrees Celsius Boiling Water Holding Cup Bottom Without Obvious Burns, Mechanical Design, Easy to Hold, Simple Lines, Good Feel. Using High Quality Healthy Lead-free Glass Material, Crystal Clear Transparent, Cup Body Pure Without Impurities, High Light Transmittance, Bring You Crystal Light.