Product description:<;br/>Name:Professional noise-cancelling earplugs<;br/>Material:Nano Silicone<;br/>Quantity:A pair<;br/>Color:Gray2,Gray3,Black2,Black3<;br/>Size:9CMX9CMX5CM<;br/>Specification:17mm*14mm<;br/>Unique product design:<;br/>1. Shark fin design<;br/>Prevent falling off comfortably and firmly<;br/>2.160° ear design<;br/>Sleep without gurgling<;br/>3. Oval 3-layer structure<;br/>Noise reduction effect increased by 30%<;br/>4. The material is selected from the German nano silica gel<;br/>Make the earplugs not sticky to gray, and feel delicate