Silver clouds

The whole art work is in a room with many silver “pillows” “floating” inside the room. A fan blew these pillow-shaped balloons flying like clouds and drawing beautiful curves in the air. Those “clouds” seems to be fragile but actually they were made by a kind of impermeable material called Scatchpack. This material used to be wrapped sandwiches in military. You might ask why they can float, as they were contain helium which has a close density than the air, what is more, the Scatchpack is a light material. This make me remember Brown motion, but the silver clouds are much bigger than the particles.