The "4d" refers to the knit, which finishes knitting itself after a bit of time. I thought it was like some klein bottle dress or something at first. Still cool.
You could take this concept a step further and 3d-scan the subject body with a laser, then 3d print a model, and the clothing draped on the model and heat-shrunk (rather than using a software to decide where to heat shrink and how much)