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Typically you have two options when jogging in the rain, and neither is particularly pleasant: don’t wear a jacket and get wet, or wear one and sweat profusely. To address this conundrum, Nike designed its Aerogami jacket with tiny vents that pop open when they sense sweat, and close when your body cools off, thanks to a moisture-­reactive film on the fabric. “This almost acts as an extension of our body’s ability to regulate itself,” says Jahan Behbahany, senior apparel innovator on Nike’s Advanced Innovation team. Versions of the jacket marketed to women are for sale now, with men’s to follow soon.

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