The Over-the-Head style Model 19A offers superior noise reduction, comfort and durability for any high-noise environment. The deeper dome design provides greater noise-attenuation in lower frequencies.Adjustable headset and stirrup assembly assures uniform headband pressure for a more comfortable, personalized fit Weather-resistant, soft foam head pad with breathable, ribbed design eliminates 'hot spots' and provides added comfortSoft, foam-filled ear seals are easily replaceableWork-ready, rugged design stands up to the most demanding work environmentsCertified Noise Reduction Rating (NRR): 27 dB CODE: 12452G-01