The Japanese really know how to fold. And they even have TV shows for those lacking the necessary knowledge and skills. To learn for yourself, just click on the picture and watch the video. But be warned, it’s not as easy as it appears.
Also, it’s not shown on the clip, but if you manage to master the skill, be wary of repeating the process on an already folded T-shirt. The procedure is so effective, that after 2 successive folds, the selected garment can be reduced to the size of a postage stamp. A third attempt can actually make the T-shirt disappear. So be careful!