Material: food grade silicone Noise reduction rate: 30% Function: noise reduction, sound insulation, hearing protection Use range: sleep, work Featured services: thickening, anti-falling Series: Silicone earplugs Color: Black Use: straight into the type Category: Silicone earplugs Efficacy: noise reduction, sound insulation, hearing protection Packing: plastic storage box carton Specifications: 1. Thickened sound insulation, jellyfish shape design, strong noise reduction, comfortable wear, repeated washing 2. Strength sound insulation, reduce about 36dB noise, repeated exposure to 85dB environment, can cause permanent hearing loss tinnitus 3. Comfortable to the ear, soft and painful to wear, comfortable to wear for a long time 4. thermal memory silicone, with the ear canal temperature plastic according to the ear canal temperature to adapt to the ear canal contour 5. Unique jellyfish design, natural plasticity, new upgrade jellyfish shape earplugs Package Included: 1 * earplugs a pair of plastic storage box