3M Peltor ER H6A/V Optime Low Profile Passive Earmuffs 3M Sale! from 1780600 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. FEATURES Slim design for high comfort and continuous wear Great for wearing with welding hoods NRR: 21 dB Type: Over-The-Head SKU:NAS 247-H6A/V