There often is that the lid that fits the body of the tapper is to buy imperceptibly gone away new Tupper. Also, Naa take up space when you accommodate the various types of Tapper and had always thought. So I now think to be if there is a tapper to be flat completely in the lid and the body-integrated. And the results you've heard the people around you and that's "purse-type" now it is called or not than go somehow. The following ideas I have struggled without leaving. 1. It is difficult to stop, "tight" the string for silicon material. Or easily squeezable without any the material's friction resistance. 2. And finally I want to stop the string much not leak water, but want to add to the opening to close something in the water leakage prevention purposes. 3. Although putting the frame (assembled to be flat) to the three-dimensional, it is desired which also are integrated, if possible. Photo 1) overall view, 2) open state, 3) is the frame that comes in to the three-dimensional.