New Balance Numeric 574 Vulc Mens Shoes. The 574 is the most iconic sneaker 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/synthetic/mesh upper. Vulcanized outsole. Reinforced in the high abrasion areas to withstand the rigors of skateboarding. Modeled after the classic New Balance 574. Adjustable lace closure for a customized fit. Imported.