Howard Leight Leightning Super Slimline Folding Earmuffs LOF. We offer complete line of Howard Leight Hearing Protection. For our complete selection of products by Howard Leight on sale please visit our Howard Leight page. For more Hearing Protection please visit our Hearing Protection store section. Features of Howard Leight R 01523 LOF Folding Ear muffs Ultraslim lightweight design delivers high degree of comfort Ideally for situations where compact earmuffs and reliable noise blocking protection are required Howard Leight LOF Quiet Plugs R01523 have a NRR Rating of 23 Specifications for Howard Leight Leightning Super Slimline Folding Earmuffs LOF R-01523: Manufacturer: Howard Leight Color: Black NRR: 23 dB Quantity: 1 Pair Size: One Size Additional Features: Over the Head Condition: New Package Contents: Howard Leight Leightning Super Slimline Folding Earmuffs LOF R-01523 Howard Leight Leightning Super Slimline Folding Earmuffs LOF R-01523