1. Closely fit and isolate noise. 2. The memory cotton is heated by different temperatures of the human body, and the shape will change, so it is more suitable for the contour of the ear canal, which can effectively improve the wearing comfort of the earphone and enjoy the beautiful music! 3. The inner hole is about 4.5mm, suitable for earphones with a diameter of 4.5-5mm, which is compatible with most earphones. 4. Easy to wear. 5. Quantity: 3 pairs 6. Size: Large: 13mm / Medium: 12mm / Small: 11mm
