... . Weather resistant. 2. High quality,good performence. SpecificationsSilicone Mobile Phone Earplug 1. Weather resistant. 2. High quality,good performence.Silicone Mobile ... Phone EarplugMaterialSBR, Neoprene(CR), Nitrile(NBR), Natural Rubber(NR), EPDM, Silicone, FKM, HNBR, IIR, ACM etc.Hardness50-80shore ...