3M Peltor Optime II ear muffs have been developed for demanding noise-hazard environments. A suitable choice for environments with substantial industrial noise or construction machinery, like airports and agricultural work. Soft wide cushions helps reduce pressure around the ears and improves comfort and wearability. Large space inside cup helps reduce moisture and heat build-up. Easy to replace cushions and inserts helps keep them hygienically clean. P3E Helmet attachment for helmet mounting (see datasheet for futher details). EN352-1, SNR-30.