Material:Hypo-allergenic,Soft silicone Function:noise reduction,hearing protection Feature:Attenuation, shielding unwanted noise, keep the sound of speech Certification:CE RoHs SNR:20db,23db,25db,27db Color:various,up to you Application:Racingshooting ravellingflying Frequency:125250500100020004000hz Design:3-layer with filter Reusable:available Show More