1. Made of environmentally friendly silicone material 2. Good elasticity, strong toughness, can form a closed environment with the ear canal to reduce sound leakage 3. Fit the ear design, no pain in the ear 4. 4.5-5mm diameter is universal, compatible with most earphones on the market 5. Specifications: 6 (2 large, medium and small) 6. Large: 13mm; Medium: 12mm; Small: 11mm 7. Hole diameter: 4.5mm
