Are you worried about the noise?This is a filter earplug that filters out noise effectively. The earplugs are designed to noise, preserve the quality and clarity of music, and reduce noise damage to hearing. Feature - Color: Black. - Material: . - Size: 7x3x2cm/2.76x1.18x0.79Inches - Noise reduction rate: 23 ( ) - Made of material, durable and practical. - liquid silica gel ( , ) and filter composition.Liquid silica gel is more and transparent, with better shockproof effect. - The product is ergonomically designed to fit the ear, and it will not be uncomfortable to use for a long time. - The product can be washed, but it is recommended to gently wipe the dust with or . - Gently pull the upper part of the ear and point the earplug at the ear canal. Gently rotate the earplug to the right position to make sure the air in the ear canal does not connect with the atmosphere. Package list: 1 x Black Case 1 x Pair of Black Filter Earplug 1 x Transperant Line