" Manufactured to EN 352-1 standards For use in high noise levels: 23dB NRR (noise reduction rating), 26dB SNR (signal to noise ratio) Design means that they fit comfortably and firmly Composite material Lightweight design "
" Manufactured to EN 352-1 standards For use in high noise levels: 23dB NRR (noise reduction rating), 26dB SNR (signal to noise ratio) Design means that they fit comfortably and firmly Composite material Lightweight design "