The magician shows an empty clear glass, pours orange juice in it. When turning the glass upside down, an orange silk (silks not supplied) drops instead!!!
It's incredible, a classic magic trick allowing for a hundred further uses, yes, that's it!!!, you can make things vanish, you can produce others, change colours, etc. all this just with one glass. Manufactured using polycarbonate; tightened, removable, high-level capacity. A true Pro Mirror Glass.