Mixing style and comfort, New Balance's 574 was a '90s icon. The 57/40 remixes it for modern times. It has a slightly slimmer profile, with an integrated "N", and adds wave-like styling on the sides to combine both '80s and '90s influences. The upper is a mix of suede and leather, while the outsole features a flattened tooth-like pattern that provides traction without drawing attention to itself. The 57/40 also meets New Balance's Green Leaf standard for sustainability, with 50% recycled materials.