The Adidas Yeezy Boost 350 V2 Infants 'Onyx' utilizes black Primeknit construction with center stitch detailing and a post-dyed monofilament side stripe. Elastic no-tie laces combine with a pull tab at the heel to deliver easy on and off. The lightweight build is mounted on a full-length Boost midsole, featuring semi-translucent Thermoplastic Polyurethane sidewalls for enhanced durability and support.