The YEEZY BOOST 380 Alien Blue RF features an upper composed of reflective multi-toned re-engineered Primeknit in a sock-like construction, providing a snug yet adaptable fit. The translucent monofilament window is woven into the upper, adding visual interest and breathability. This model features no-tie stretch laces for easy on and off wear and comes equipped with a second set of standard laces. A re-engineered full-length BOOST midsole elevates the cushioning experience, offering optimal comfort where consumers need it most. The herringbone rubber outsole offers unique design cues and improved traction.