Sponge Cup / tableware

Using a glass drinking ice water.The vision and the feeling in the mouth obtain icy cold enjoyment.
But the clean tabletop always leaves water-damaged.Causes the tabletop not to be artistic.
Writes laboriously note or beloved picture.More possible because of water-damaged relations, but falls wet sticks.when clean perfectly clear drinking glass .
Often washes the unclean cup bottom.Even if after washing,Drinking glass also always foggy.
using the water absorbing force extremely good sponge material quality to replace the cup bottom material quality.Solve the question of glass bottom has the water-damaged.