Electronic sound amplification earmuff with 2 independent high frequency directional microphones. Automatically compresses harmful impulse to a safer range below 85dB without clipping or cutting. Padded CoolMax headband moves moisture away while providing cool comfort. A compact folding feature allows for easy storage.- Dual Microphones - Compresses Harmful Noise - Adjustable Headband - Compact Folding Feature - CoolMax Padded Headband - NRR 23