The Peltor H7A Earmuff can claim to be the best-selling earmuff in the world. With the smooth feel of the spring steel headband and the three layers of cushioning, it's clear why. An inner fluid filled cushion is covered with foam, which is then encased in high quality vinyl, making for just about the most comfortable pair of muffs we have ever offered. Peltor refers to the H7A as the 'Optime 101' model. This means that, with an NRR 27 rating, these earmuffs will protect your hearing in any environment up to 101 decibels of external noise. Manufactured in Sweden and assembled in the U.S., the H7A weighs 8 oz.