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Ralph Lauren adds wearable tech to the opening ceremony’s fashion mix.

Ralph Lauren has been outfitting Team USA with their formal looks since 2008. The approach is pretty much always red-white-and-blue preppy classicism, and this year’s outfits don’t look much different (check out those striped belts and ascots!) but there’s actually a secret sauce in the mix, and it’s a lot cooler.

The navy jackets of the flag bearers Sure Bird and Eddy Alvarez incorporate what the brand has dubbed RLCoolant technology, which “disperses heat from the wearer’s skin through a sophisticated device that monitors and optimizes temperature,” according to a company announcement.

How exactly that happens is unclear (it’s a secret!