Nike is introducing an upgraded version of its React foam cushioning as a key feature of the InfinityRN 4. The all-new ReactX foam brings increased energy return along with a focus on sustainability. The midsole's material reduces its carbon footprint by 43 percent compared to regular React foam, while also boasting a 13 percent boost in energy return.
The InfinityRN 4 itself was designed with a focus on the "everyday" female runner driven by extensive research. An updated Flyknit upper increases the volume in the toe area, packs a support system at midfoot, and offers a water-resistant lining. Foam padding also sits in the collar, while the midsole has been cut wider to provide greater stability upon making contact with the ground.
ReactX foam will arrive to market after five years of research, development, and testing. The significant reduction in the material's carbon footprint is a result of turning to injection molding instead of compression molding, a change in manufacturing that had proven challenging with high-performance foam. Nike's formula for ReactX enables it to be manufactured in this way while also bolstering performance.
"Athletic performance and impact on the planet aren’t mutually exclusive," Bret Schoolmeester, Nike’s senior footwear director, said in a release. "Our goal is to make athletes better and make the planet better for athletes. With materials representing about 70 percent of Nike’s total carbon footprint, innovating new, more sustainable materials is a top priority and we’ll do that, while delivering better performance."
The InfinityRN 4 and the era of ReactX cushioning are slated to launch in August for North America. The sneaker will be available through Nike and select retailers, online and in-store. Likely available in women's sizing, the retail price hasn't yet been announced. Keep it locked to our Twitter and the Sole Retriever mobile app to stay informed about the latest releases, raffles, and news in the sneaker and streetwear world.