DescriptionCondition: & high qualityMaterial: SiliconeWeight: 20gSpecifications: top diameter is about 0.9cm, height is about 2.4cmUses: hearing protectionNoise reduction alue: 27dbScope of application: aircraft, high-speed rail, mountain driing, skiing, etc.Features:1. Enironmentally friendly materials Green and healthy.Healthy silicone material, green and healthy, non-irritating.2. Micro-porosity and air chamber design, effectiely balance the internal and external air pressure.3. Smaller and lighter, comfortable to wear, three-dimensional imitation ear canal design, soft and contractible.4. Supports washing, reusable and long life.5. Comes with a beautiful carrying case for easy storage.Note:There may be some subtle differences between the color of the image and the actual project.Thanks to the manual measurement, please allow 1-2mm difference, thank you.Package Included:1 pair of aiation earplugs