adidas’ Ultraboost has had comfort at its core since day one, and that expertise really shows with these 4.0s. The Primeknit uppers — which are partially recycled using ocean waste — are designed to give a sock-like fit, while the sole is cushioned with boost™ to give unrivalled support and responsiveness all-day long. - Primeknit Uppers - Sock-Like Construction - Torsion System - boost™ Cushioning - Continental™ Rubber Outsole - Style Code: FZ4008
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