3M™ PELTOR™ Optime™ I Headband Format Earmuff H510A, Yellow, Class 5 SLC80 28dB 3M™ PELTOR™ Optime™ I Earmuffs, H510A offer versatile protection for both short and long duration tasks. Ideal for protection against noise arising from a wide range of applications in the workplace. Reduces noise levels up to 28 dB Low-profile design combines easily with other safety equipment 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