LIGHTWEIGHT CUSHIONED HEADBAND: Steel-wire construction with padded headband and precision micro adjustments designed for just the right fit around the ear MEMORY FOAM EAR CUSHIONS: New unique memory foam that combines denser and softer foam than previous models, for greater comfort and attenuation. Reduces squeezing pressure on the head and enhances comfort ROBUST CONSTRUCTION: An oil-resistant cup surface to withstand oily, heavy-work environments and frequent cleaning. ABS molded with internal baffle design for lighter weight, patent pending NOISE REDUCTION RATING (NRR): 25