It's known that the German brand are real fans Ultra X Prime of, including it in the original internal support bands, and we see it again again in in the form of the dark shades of the 'rim' aloft the sole plate and under the upper This ingenious aspect will take the burden away from the frame and upper (which are often moving in different directions) and result in a more long-lasting, comfortable pair of soccer cleats.
https://fastaw.com/ultra-x-prime