Feature: 1. HIGH QUALITY MATERIALS: Replacement earbud tips made of soft silicone provide enhanced acoustic insulation, stability and long lasting comfort in a durable, flexible, interchangeable and removable form. 2. GOOD SOUND QUALITY: Silicone eartips deliver deep, consistent, rich bass. Comfortable and sturdy to wear, without sound fluctuations caused by ear canal compression and deformation. 3. ERGONOMIC DESIGN: Silicone earbud tips are ergonomically designed to be less fatiguing to wear for long periods of time and are once again comfortable to wear and can be replaced with any damaged, scratched, defective or missing earbuds. 4. MULTIPURPOSE: Silicone eartips are compatible with for Philips headphones, for Jaybird X4 X3 X2 X in ear headphones, and most other earbuds, giving you the best experience in sound world. 5. COMPATIBILITY: Replacement earbud tips are compatible with most headphones with a 4.5mm wide opening and are compatible with headphones that use 4.5mm to 6.5mm sound holes. Specification: Item Type: Earplugs Product Material: Silicone Scope of Application: Suitable for in Ear Headphones with Sound Guide Holes of About 4.5mm/0.2in to 6.5mm/0.3in 3 Sizes: L, M, S Inner Diameter: Approx. 4.5mm/0.2in Outer Diameter: L: Approx. 14mm/0.6in M: Approx. 12.5mm/0.5in S: Approx. 11mm/0.4in Color: Gray Red. Package List: 6 x Earplugs Note: Manual measurement, please allow a slight error