?Noise canceling earphones tips include 3 pairs of silicone and 3 pairs of memory foam, with size S / M / L, to meet your different needs. In addition, with a small storage box, convenient to keep and protect the ear tips. ? Soft memory foam earbud tips: Great stretchability, filling space and keeping shape. The replacements earbuds have good air permeability, effectively isolate outside noise and improve bass sound quality. ? Silicone ear tips: Thinner earbud edge for silicone earbud tips, flexible and soft to wear, will not provide pressure. Silicone material is durable and washable, effectively reduce noise. ? Comfortable and Convenience: Replacement earbuds tips are suitable for different ear structures, they hold well in place even when you play sports. Soft and light materials, the ear tips are designed for maximum comfort. ? Easy to use: These in-ear replacement earbuds have small, medium, large size. They fit headphones with internal size 5mm-6mm (fit almost all earphones). You can choose the suitable size for your in ear earphones. Earbud tips are convenient to take along.