1. Material: silicone
2. Noise reduction rate: 40-60 decibels
3. Suitable for small ear canal, goodbye noise
4. Three-layer sound insulation, physical noise shielding
5. Double-head switch, storage and carry around
6. Slow rebound design, more comfortable to wear
7. The set contains: 10 replacement sponges + 2 pairs of double-layer silica gel
8. Weight: 46 grams