Designed to stand up to the K-12 environment, Smart-Trek™ headsets are built to last. Smart-Trek™ feature a rugged and comfortable design, so teachers can have headsets that will function for years, and students can wear the headsets for an extended period of time. The headband easily adjusts to fit students of all ages. The ear cups are made with high-quality leatherette ear cushions that are easy to clean, durable, and provide excellent noise-isolation for better concentration. Smart-Trek™ headsets feature a durable, flexible, steel-reinforced gooseneck microphone and trusted Dura-Cord™ -- the chew, kink and knot-resistant, PVC-jacketed, braided nylon cord.