No sweating cup / housekeeping

The cup with ice always ooze a little water make a trace on table in room temperature, and take the cold and wet cup is uncomfortable.
User will not feel cold and wet when take cup by absorbed water characteristic of high density sponge surround the cup.
Because sponge have characteristic of easy clean and dry, moreover result of heat insulation and protect cold. And it can make a variety of styling for cup put on different out shape.
Use screw combine cup and sponge to fix, they take apart two part to clean and use.
With screw cup increase stable handful when take cup.