New Balance Men's Mt876 Synthetic and mesh Rubber sole ABZORB provides a superior blend of cushioning and compression set features with Dupont Engage and Isoprene rubber for the ultimate ride ROCK STOP is a flexible protective layer that protects feet from rocks and shock, minimizing pressure, and dispersing shock energy SURE LACE is a computer knit lace/chord designed with a reciprocating wave pattern that will not untie under high performance or inclement conditions LockDown Liner is an adjustable, internal liner that is integrated into the lacing to provide a custom fit and securely hold the midfoot Debris free construction