New Balance Men's CT1004 Tennis Shoe 100% Synthetic and mesh Rubber sole ABZORB SBS is an engineered, non-cellular elastomer designed to provide optimal shock absorption and no compression set LockDown Liner is an adjustable, internal liner that is integrated into the lacing to provide a custom fit and securely hold the midfoot NLOCK is an integrated lacing and webbing system that provides optimal fit, support and security LIGHTNING DRY Liner Herringbone outsole