The Adidas Yeezy Boost 350 V2 Cmpct Infants 'Slate Onyx' Utilizes An Engineered 3D Knit Upper, Composed Of 50% Recycled Content And Featuring A Blend Of Black And Dark Grey Yarns. The Sock-Like Build Is Secured With No-Tie Elastic Laces, Allowing For Easy On-And-Off Wear. Responsive Cushioning Is Provided By Adidas' Full-Length Boost Midsole, Wrapped In A Ribbed Thermoplastic Polyurethane Cage And Exposed Through Cut-Outs In The Grippy Rubber Outsole.