3M Peltor Optime II Helmet Attach Earmuff H520P3GS is suited to noisey environments with increased low frequency attenuation. A suitable choice for typical environments with substantial industrial noise or construction machinery, airports and agricultural work. Features: Reduces noise levels up to 29 dB Compatible with 3M 25 mm hardhats and visors. Also includes 30 mm backplate. Large space inside the cups helps minimise heat and moisture build-up Soft, wide, cushions help reduce pressure around the ears Cushions and inserts available as replacement Hygiene Kits
