Drinking glass should be the preferred glass, especially office and home users. The glass is not just transparent and look good, but in all the material cups, the glass is the most healthy and safe. Glass is made from inorganic silicate and contains no organic chemicals during firing. You do not need to worry about chemicals being drank when drinking in glass or other drinks ; And the glass surface is smooth, easy to clean, bacteria and dirt is not easy to breed in the cup, so people drink the glass is the most healthy and safest.
The only caveat is that the glass is most afraid of expansion and contraction, the temperature is too low glass (just remove from the refrigerator, just come in from the cold outside), do not immediately filled with hot water to prevent burst.