Water control / cup

"Sloped Cup"
A lot of people filled water in the cup as much more than they need to drink. Extra water in the cup is wasted all the time and it might cause an exhaustion of water in the future. Therefore, I suggest the "Sloped Cup" for conserving water in daily life and to make easy to drink functionally. Because of the sloped side, this cup can be easily dried to having upside down position as well.