The 57/40 from New Balance approaches its iconic 574 silhouette with a fresh angle and a willingness to experiment. Where the versatility of the original 574 was the result of a design that mixed road and trail features, the 57/40 combines the familiar with a new set of features inspired by the technical running designs of the 80s and 90s. The unique midsole combines a flared version of the classic 574 construction with tech-inspired '90s details, while the signature wavy trim is reminiscent of the '80s.