[Universal Fit] Our 18mm foam earphone sleeve adopts a universal fit design, which is compatible with various earphones and in ear displays. These earphones and displays use 18mm ear tips to achieve safe and comfortable sealing. [Soft and comfortable] These sleeves are made of high-quality Material, providing soft and comfortable cushioning effect in the ear canal. This material ensures a comfortable wearing experience and reduces ear fatigue. [Noise isolation] The foam cover has excellent noise isolation performance, which can block external sound, and achieve a more immersive listening experience by focusing audio directly into the ear. [Easy to connect and remove] These sleeves are easy to connect to headphones and can be removed when needed. They can be quickly installed on earplugs and then peeled off for cleaning or replacement. [Durable and reusable] With proper care, these foam sleeves are durable and can be reused. Even after multiple uses, they can maintain their shape and effectiveness, ensuring long-lasting performance. Colour:Black Material:sponge Package Contents: 200x Earphone Protective Sleeve(Single hole) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.