The unrolled mat is shown very clearly and cleanly on both sides. It is clear to those viewing that nothing is hidden within or behind it in any manner.
You then roll the mat back up whilst you obviously have your hands and arms well away from your body, thus eliminating any possibility of body loads or other apparent deception.
A magical pass is made over the tube and then meters and meters of colorful silks are produced from out of the end of the rolled-up mat.
Indeed, within this multi-media video, photo images and PDF package, you will also discover how a bottle of champagne (or similar) could, if you so desired, also be produced from the mat at the very end.
This is intended as a stage effect whereby ideally you would not have anyone standing behind you. That said, with practice it is possible to perform this surrounded, thanks to the magical methods combined together by the late Jack Griggs.
For the record, there is absolutely nothing special or gimmicked about the Chinese mat, and you have nothing whatsoever stored on your person before or after this magical miracle has been performed.
This is a very clever and visually amazing trick indeed! I will state again that there are no body loads or steals from the sleeves and the Chinese mat used is itself entirely ungimmicked.