Glass or plastics vessel for drinking and other purposes is shaped like a condom, with parallel sides and slight curve along its length and rounded bottom

摘要

The length of the glass is very much greater than the diameter and the glass is slightly curved along its length. The cross-section is generally circular. The top of the glass has a thickened lip, and the bottom is hemispherical, with a small generally hemispherical projection. A typical glass may be made of transparent glass or transparent plastics.