The New Balance 3715 Arch Stability Insoles 3/4 are a 3/4-length, semi-rigid orthotic arch support for low to neutral arch types. They feature a Hytrel arch plate for superior arch support and poron cushioning layers to provide additional comfort and shock absorption. They have a MicroZap antimicrobial fused top cover to help kill odor-causing bacteria, with airflow channels built into the insoles to help move warm air out and pull cool air in. They are ideal for tight-fitting shoes with non-removable insoles or shoes requiring additional room in the toe area. New Balance 3715 Arch Stability ¾ Insoles