1. For JBL Synchros E30 headphones. 2. Closely fit the ear to reduce leakage and slip. 3. Dust-proof and thin mesh to isolate some dust and effectively protect the inside of the earphone. 4. High-cycle heat wave is pressed to seal the edge and prevent off-line. 5. The headset is not included. 6. Outer diameter: 60mm. 7. Inner diameter: 34mm.
