Numeric 574 Trainers.- The 574 is the most iconic trainer in New Balance’s storied history. This season we introduce our Numeric version of the 574 which features a vulcanized construction with vaulted heel design that flexes on impact. We’ve reinforced the toe with rubber for durability and added a PU lasting board that sits underneath a molded Ortholite insert for additional step in comfort and support.- Suede-mesh-synthetic-pigskin upper.- Ref: NM574VBG Colour: blue