Primeknit upper No-tie laces Boost midsole Herringbone rubber outsole The Adidas Yeezy Boost 380 Features An Upper Composed Of 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.