Type:Other Pressure Range:4-20 cmH2O Material:Nano Silicone Model Number:HCR2625 Item Type:Sleep & Snoring Color:Red,Gray,Black Suit for:Students,aldult Scenes:Travelling/Studying/sleeping Features1:Promote sleep Features2:Ear plug Features3:Ear plugs noise cancelling Features4:Dormir Features5:Plugs for sleeping Features6:Earplugs for sleeping Features7:Ear plugs noise Name: Professional noise reduction earplugs Material:Nano Silicone Uses:Hearing protection Specification:17mm*14mm Life:Long-term use Features: 1.The use of high-quality silicone, soft and flexible, effectively fit the contours. 2.Not only can effectively reduce the noise but also soft and comfortable to wear. 3.Enhanced the support of the ears, enhance the wearing tightness and comfort, ensure that the headset is not easy to fall off during exercise! 4.Can be washed and cleaned for repeatedly using. Unique Product Design: 1. Shark fin design,prevent falling off,comfortable and firm 2.160 ear design,sleep without gurgling 3. Oval 3-layer structure,noise reduction effect increased by 60% 4. The material is selected from the German nano silica gel,make the earplugs not sticky to gray, and feel delicate