Honeywell Leightning L1 Slimline Low Profile Safety Earmuff (RWS-53006) Low-profile design is slim and contemporary Avoids "squeezing" sensation on head with super-soft ear cushions Telescopic headband adjustment for custom fit; features padded foam to minimize pressure on head and steel wire construction to withstand demanding use Patented Air Flow Control technology in earcup reduces sound across all frequencies without increasing earcup size or weight Noise Reduction Rating (NRR) 25