Y-3 Runner 4D IO

Y-3 favours the technical, as it so often does, to create this all-black Runner 4D. It’s made with lightweight textile uppers and an innovative, athlete-inspired 4D midsole, but that’s not all. There’s a removable Primeknit sock, too, allowing for a secure fit when worn or one that’s more breathable when it’s taken out.Textile UppersDetachable Primeknit Sock4D MidsoleRubber Outsole