Upper composed of a mesh underlay combined with an RPU cage Lace up closure BOOST midsole Knitted elastic collar provides a premium lock down feel Herringbone rubber outsole The Adidas Yeezy Basketball Quantum Features An Upper Composed Of A Mesh Underlay Combined With An Rpu Cage That Wraps The Upper For Structure And Durability, While The Suede Toe Overlay Offers Toe Protection And Durability. The Knitted Elastic Collar Provides A Premium Lock Down Feel And Multi-Directional Support. Reflective Material Throughout The Inner Webbing And Heel Counter Emits Light In Darkness. The Adidas Yeezy Basketball Quantum Elevates The Cushioning Experience With A Re-Engineered Full-Length Drop-In Boost Midsole With A High-Performance Shank That Provides Optimal Comfort Where Athletes Need It Most, While The Herringbone Rubber Outsole Provides Superior Traction For Dynamic Cuts And Pivots.