New Balance continues to innovate, revamping their classic 574 model sneaker with sonic welding technology. The result is the Sonic 574, a more secure, more comfortable, more balanced sneaker. Typically used for high performance camping equipment and sporting equipment, the sonic welding process creates a tighter seal, without relying on typical sealants, fusing the materials together for a more natural fit. From an ecological standpoint, the Sonic 574 is also environmentally efficient, cutting out the need for glue or stitching, and made from Tirrenina, a solvent-free nubuck.