The Yeezy Boost 380 'Alien Blue' emerges with a vibrant look on its lifestyle construction. Built with Primeknit, the upper features a blend of light blue and grey hues, with a translucent monofilament window cutting through the side wall. The shoe's sock-like upper is cushioned underfoot by a Boost midsole housed in a semitranslucent rubber cage, with a herringbone outsole providing traction.