Why does Richell Richell plastic cups have a washer?
In fact, very simple, the reason why the plastic cushion is to seal the insulation, thermos bottles are not hot enough to go out, so that the heat of the water with a permanent
This is Richell in order to prevent the Water Leakage Richell design. Plastic water bottle is most afraid of leaking
This is the unique double leak proof design of Richell. They have plastic drinking cups.
