The Nike React Element 55 “Black/White” is a clean and simple iteration of the ultra-stylish sneaker by Nike Sportswear. The React Element 55 is the opaque version of the highly popular React Element 87, which became one of the most talked about sneakers of 2018 thanks to its cutting-edge design that features a transparent upper. The React Element 55 delivers the same comfort thanks to the full-length React foam cushioning, but the upper has a more traditional solid textile construction.