... Silicone Mobile Phone Earplug 1. 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 ...