Material:Liquid Silicone Rubber Color:Colorful filters Certification:CE EN352-2 SNR:28dB, 25dB, 23dB, 20dB Size:12 * 20mm Function:Noise reduction Application:Musician /Sports event/Shooting/ Travelling/Sleeping ,etc. Cord:Optional Packing:Polybag default, custom for addtional fee Show More