This nifty and practical production device is sort of like a Temple Screen in its method, in that you can show both sides of a flat, multi-hinged geometric piece, and then produce a pretty good-sized load from it. After showing the red side and the blue side of the flattened pyramid, the magi folds it into a sort of pyramid shape, (like the picture), and then produces silks from inside.
The pyramid is self-contained, so no extra loading. It cannot be done surrounded, but with some care, the "good" angles are very wide. (If you are familiar with Temple Screen, the angles are much better than with that excellent production device. The Pyramid itself is about 6 inches at the base, and about 3 inches tall -- the load chamber is good for silks, but not for larger solid items.
Highly recommended if you need a practical way to produce a long string of sillks. I produce the silks and then use them as cover to steal a larger load, like a rabbit, from under my table.