Features 1¡¢3 Sizes Packaging: Including 3 sizes of earplugs, each size has a pair of earplugs (one pair each for L, M, S), suitable for people with different needs. 2¡¢Widely Compatible: These earplugs have a 3.8mm wide opening, compatible with earphones that use 3.8mm 5.5mm sound holes, and are compatible with most earphones. 3¡¢Silicone Material: The soft silicone material replaces the earplug head to provide noise isolation, ear stability and lasting comfort, durable, flexible, replaceable and detachable. 4¡¢Ergonomic Design: There will be no sound fluctuations caused by the compression and deformation of the ear canal, and it is not easy to fatigue after long term wear. 5¡¢Replacement Earplugs: You can replace damaged or missing earplugs, giving your headphones new life, more sturdiness and durability, and can bring deep, steady, and rich bass. Specification Item Type: Earplugs Material: Silicone Three Sizes: Large, Medium, Small Inner Diameter: 3.8mm or 0.15in Outer Diameter: Large: 13mm or 0.51in, Medium: 12mm or 0.47in, Small: 11mm or 0.43in Application: The inner tube aperture of this earplugs is 3.8mm, suitable for headphones with a sound guide hole of about 3.8mm-5.5mm. Package List 6 x Earplugs