eco cawan

i was so impressed at kagoshima university, agriculture faculty
they make something like cawan called eco cawan
it will immediately solute after dipping in the water

pertanyaan,
cawan ini gak bisa berlama lama dg air
so, bisa ngebayangin nggak, bikin teh pake cawan itu
lalu ditaruh di meja 2 jam aja
nah lho.. meja bakal basah tuh..
cawan nya luruh karena air didalam cawan itu..
repot nggak?