The ad was shot in one single take and did not make use of CGI effects. The imagery is quite powerful, even more so knowing that what you see is what actually took place on that dark and ominous track. You can see how much work went into the staging by watching this behind-the-scenes video.
When you're designing a shirt, it makes sense to cut the fabrics so that the wearer is most comfortable with their arms down at their sides in a resting position. But for a swimmer, whose arms are constantly in motion, Roka Sports believes it's advantageous to instead design a wetsuit with an athlete's arms raised and reaching for the next stroke.